Imprisonment is a legal term. It refers to the restraint of a person's liberty.
The book Termes de la Ley contains the following definition:
Imprisonment is no other thing than the restraint of a man's liberty, whether it be in the open field, or in the stocks, or in the cage in the streets or in a man's own house, as well as in the common gaols; and in all the places the party so restrained is said to be a prisoner so long as he hath not his liberty freely to go at all times to all places whither he will without bail or mainprise or otherwise.
This passage was approved by Atkin and Duke LJJ in Meering v Grahame White Aviation Co.
- John Rastell. Termes de la Ley. 1636. Page 202. Digital copy from Google Books.
- Meering v Grahame White Aviation Co (1919) 122 LT 44, [1918-19] All ER Rep 1490 at 1502 and 1503 and 1507. (The passages in question are set out in R v Sayle, 29 September 2008, Court of General Gaol Delivery, Isle of Man.
- Clerk and Lindsell on Torts. Sweet and Maxwell. Sixteenth Edition. 1989. Paragraph 17-15 at page 972.
- Archbold Criminal Pleading, Evidence and Practice. 1999. Chapter 5. Section II. "Sentences of Imprisonment".