Eitr is a mythical substance in Norse mythology. This liquid substance is the origin of all living things: the first giant Ymir was conceived from eitr. The substance is supposed to be very poisonous and is also produced by Jörmungandr (the Midgard serpent) and other serpents.
The word eitr exists in most North Germanic languages (all derived from the Old Norse language) in Icelandic/Faroese eitur, in Danish edder, in Swedish etter. Cognates also exist in Dutch etter (pus), in German Eiter (pus), in Old Saxon ĕttar, in Old English ăttor. The word is broadly translated: poisonous, evil, bad, angry, sinister etc.
- Ór Élivagom
- stukko eitrdropar,
- svá óx, unz varð ór iötunn;
- þar órar ættir
- kómu allar saman,
- því er þat æ allt til atalt.
- From Éliwaves
- Eitrdrops splashed
- that grew into a giant
- who begat all families
- from which all [giants] come
- that is why we are easily angered
The last line of the stanza in Vafþrúðnismál where Vafþrúðnir says "that is why we are easily angered", is a word-play with the meaning of the word eitr, as it also means anger/angry (similar to "poison a relationship").
In Tomb Raider: Underworld, which features a storyline heavily influenced by Norse mythology, eitr plays an important part in the plot.
In Titan Quest: Ragnarök eitr can be found in Asgard on most creatures.