Brass monkey (colloquialism)

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This article is about the colloquial expression. For other uses of the term, see Brass monkey (disambiguation).
The Brass Monkey of Stanthorpe, Queensland, a place known for its "brass monkey weather", complete with a set of balls

The phrase "cold enough to freeze the balls off (or on) a brass monkey" is a colloquial expression used by some English speakers. The reference to the testes (as the term balls is commonly understood to mean) of the brass monkey appears to be a 20th-century variant on the expression, prefigured by a range of references to other body parts, especially the nose and tail.


During the 19th and 20th centuries, small monkeys cast from the alloy brass were very common tourist souvenirs from China and Japan. They usually, but not always, came in a set of three representing the Three Wise Monkeys carved in wood above the Shrine of Toshogu in Nikkō, Tochigi, Japan. These monkeys were often cast with all three in a single piece. In other sets they were made singly. Although three was the usual number, some sets of monkeys added a fourth, with its hand covering its genitals. Old brass monkeys of this type are collectors' items.[1][2] Michael Quinion, advisor to The Oxford English Dictionary and author of the website World Wide Words, writes, "it's more than likely the term came from them".[3]


Early references to "brass monkeys" in the 19th century have no references to balls at all, but instead variously say that it is cold enough to freeze the tail, nose, ears, and whiskers off a brass monkey; or hot enough to "scald the throat" or "singe the hair" of a brass monkey.[4]

  • An early known recorded use of the phrase "brass monkey" appears in the humorous essay "On Enjoying Life" by Eldridge Gerry Paige (writing under the pseudonym Dow, Jr.), published in the New York Sunday Mercury and republished in the book Short Patent Sermons by Dow, Jr.: "When you love, [...] your heart, hands, feet and flesh are as cold and senseless as the toes of a brass monkey in winter."[5]
  • Another early published instance of the phrase appeared in 1847, in a portion of Herman Melville's autobiographical narrative Omoo:[6]
"It was so excessively hot in this still, brooding valley, shut out from the Trades, and only open toward the leeward side of the island, that labor in the sun was out of the question. To use a hyperbolical phrase of Shorty's, 'It was 'ot enough to melt the nose h'off a brass monkey.'"
  • An early recorded mentioning of the freezing a "brass monkey" dates from 1857, appearing in C.A. Abbey, Before the Mast, p. 108: "It would freeze the tail off a brass monkey".[7]
  • The story "Henry Gardner" (10 April 1858) has "its blowing hard enough to blow the nose off a brass monkey".[8]
  • The poem "Lines on a heavy prospector and his recent doings in the North-West" (20 June 1865) has "It would freeze off a brass monkey's nose"[9]
  • The article "Echoes from England" (23 May 1868) has "that same east wind ... would shave the whiskers off a brass monkey"[10]
  • The Story of Waitstill Baxter, by Kate Douglas Wiggin (1913) has "The little feller, now, is smart's a whip, an' could talk the tail off a brass monkey".[3]
  • The Ivory Trail, by Talbot Mundy (1919) has "He has the gall of a brass monkey".[3]
  • Thomas Wolfe (1900–1938) wrote in one of his notebooks:[11]
Ernest said, "It would freeze the balls off a brass monkey — that's how cold it gets."
GRACE: Well, I guess I'd better be "barging along," as they say. I'm sure it's getting colder by the minute.
TOM: Yes—I think we'd best bring the brass monkeys in tonight.[12]


The "brass monkey" is the nickname of the house flag of the Cunard Line, adopted in 1878, a lion rampant or on a field gules holding a globe.[13] The reference is almost certainly irreverent humour, rather than a source of the expression, of which variants predate it.


A "brass monkey" is one of any number of citrus-flavored alcoholic drinks.[citation needed] In 1986, the hip hop band the Beastie Boys released a single called "Brass Monkey" from their album Licensed to Ill, although the song's lyrics are focused on the cocktail of the same name.


US Patent 4634021 describes:

A release mechanism is disclosed for releasing an object such as a ball from a body under the force of gravity. A bimetallic element obstructs or opens an opening in the body for retaining or releasing the object depending upon the temperature of the bimetallic element. The release mechanism may be incorporated into a novelty "brass monkey" for "emasculating" the monkey when the temperature decreases to a predetermined temperature at which the balls in the "brass monkey" are permitted to drop to a base which is designed to produce an audible sound when struck by the balls.[14]

Supposed etymology[edit]

It is often stated that the phrase originated from the use of a brass tray, called a "monkey", to hold cannonballs on warships in the 16th to 18th centuries. Supposedly, in very cold temperatures the "monkey" would contract, causing the balls to fall off.[15] However, nearly all historians and etymologists consider this story to be a myth. This story has been discredited by the U.S. Department of the Navy,[16] etymologist Michael Quinion, and the Oxford English Dictionary (OED).[17]

They give five main reasons:

  1. The does not record the term "monkey" or "brass monkey" being used in this way.
  2. The purported method of storage of cannonballs ("round shot") is simply false. Shot was not stored on deck continuously on the off-chance that the ship might go into battle. Indeed, decks were kept as clear as possible.
  3. Furthermore, such a method of storage would result in shot rolling around on deck and causing a hazard in high seas. Shot was stored on the gun or spar decks, in shot racks—longitudinal wooden planks with holes bored into them, known as shot garlands in the Royal Navy, into which round shot were inserted for ready use by the gun crew.
  4. Shot was not left exposed to the elements where it could rust. Such rust could lead to the ball not flying true or jamming in the barrel and exploding the gun. Indeed, gunners would attempt to remove as many imperfections as possible from the surfaces of balls.
  5. The physics does not stand up to scrutiny. The contraction of both balls and plate over the range of temperatures involved would not be particularly large. The effect claimed possibly could be reproduced under laboratory conditions with objects engineered to a high precision for this purpose, but it is unlikely it would ever have occurred in real life aboard a warship.

The reference is most likely a humorous reference to emphasize how cold it is.[17]

Another claim is from the slang name during the age of sail of the bronze brackets supporting the correcting spheres of soft iron on both sides of a wooden binnaclecontaining a magnetic compass on a steel ship. The brackets are slotted so that the compass adjustor can accurately compensate for the magnetic effects of the hull. Bronze is used because it is non-magnetic and not subject to de-zincification like brass. Bronze is an alloy of copper and tin and the latter can be subject to tin-pest at very low temperatures. This would tend to weaken the bronze, particularly at the edged of the adjusting slots, allowing the correcting sphere(s) to fall off.


  1. ^ "Three Wise Monkeys". Retrieved September 15, 2016. 
  2. ^ Schuttenhelm, Emil. "The three wise monkeys that hear, see and speak no evil". Retrieved September 15, 2016. 
  3. ^ a b c Quinion, Michael. "Brass Monkey weather". World Wide Words. Retrieved July 21, 2005. it was first recorded in the USA, in the the oldest example known, from Herman Melville’s Omoo (1850) 
  4. ^ Mikkelson, Barbara (July 13, 2007). "Brass Monkeyshines". Retrieved March 27, 2012. 
  5. ^ Dow, Jr. (1845). Short Patent Sermons. New York: republished online at Google Books. p. 108. 
  6. ^ "Pacific Rovings". Living Age. New York: republished online at Google Books. 14 (167): 151. 
  7. ^ Lighter, J.E. (1997). Random House Historical Dictionary of American Slang. New York: Random House. ISBN 0-679-43464-X. 
  8. ^ "Henry Gardner.". Australian Home Companion and Band of Hope Journal. Sydney, NSW: National Library of Australia. 10 April 1858. p. 121. Retrieved 7 June 2014. 
  9. ^ "Lines on a heavy prospector and his recent doings in the North-West.". Launceston Examiner (Morning. ed.). Tasmania: National Library of Australia. 20 June 1865. p. 5. Retrieved 7 June 2014. 
  10. ^ "Echoes from England.". The Australasian (Melbourne, Vic. : 1864 - 1946). Melbourne, Vic.: National Library of Australia. 23 May 1868. p. 650. Retrieved 7 June 2014. 
  11. ^ The Notebooks of Thomas Wolfe, vol. 2, edited by Richard S. Kennedy and Paschal Reeves, University of North Carolina Press, 1970, p. 497.
  12. ^ Barry, Philip Jerome Quinn. "The Animal Kingdom, by Philip Barry". Retrieved January 25, 2013. 
  13. ^ Rogers, John (1984). Origins of Sea Terms. Mystic, Connecticut: Mystic Seaport Museum. p. 23. ISBN 978-0913372319. 
  14. ^ "Release mechanism". 6 January 1987. 
  15. ^ "Covey Crump, supporting the "cannonball frame" theory". 
  16. ^ US Naval Historical Center
  17. ^ a b "What is the origin of the term 'brass monkey'?". Oxford Dictionaries. Retrieved 2016-04-30. 
  • Oxford University Press. "binnacle". The Oxford Companion to Ships and the Sea. Retrieved April 5, 2009. 
  • Roget, Peter Mark. "monkey". Roget's Thesaurus (1911). Retrieved April 5, 2009. 
    • Beavis, Bill (1994). Salty Dog Talk: The Nautical Origins of Everyday Expressions. New York: Sheridan House. ISBN 0-924486-82-1. 
    • Isil, Olivia A. (1996). When a Loose Cannon Flogs a Dead Horse, There's the Devil to Pay. Camden, Maine: International Marine. ISBN 0-07-032877-3.  Pages 23–24
    • King, Dean (1995). A Sea of Words. New York: Henry Holt. ISBN 0-8050-3816-7. 
    • The Compact Oxford English Dictionary. Oxford: Clarendon Press. 1993. ISBN 0-19-861258-3. 
  • "The Brass Monkey Motorcycle Rally". Retrieved June 17, 2008. 
  • "Brass Monkeys". The Phrase Finder. Retrieved July 21, 2005.  itself citing
    • Cassidy, Frederick G.; Houston Hall, Joan, eds. (1996). Dictionary of American Regional English. 3. Cambridge, Massachusetts: Harvard University Press. p. 642. 
    • Granville, Wilfred (1962). A Dictionary of Sailors' Slang. London: Andre Deutch. p. 77. 
    • Kemp, Peter, ed. (1976). Oxford Companion to Ships & the Sea. New York: Oxford University; Press. p. 556. 
    • The Oxford English Dictionary. New York: Oxford University Press. 1933. 
    • Partridge, Eric. A Dictionary of Slang and Unconventional English (8th ed.). New York: Macmillan Publishing Company. p. 917. 
    • Longridge, C. Nepean (1981). The Anatomy of Nelson's Ships. Annapolis, Maryland: Naval Institute Press. p. 64. 
    • The Visual Dictionary of Ships and Sailing. New York: Dorling Kindersley. 1991. p. 17.