numeral
The cardinal number occurring after ten and before twelve. Represented as 11 in Arabic digits.
noun
(cricket) A cricket team of eleven players. Hence first eleven - the team of best cricket players (at a school), second eleven - the "B" team, etc.
(soccer, American football) A football team of eleven players; the starting lineup.
(Internet, slang, sarcastic) Deliberate misspelling of !!, used to amplify an exclamation, imitating someone who forgets to press the shift key while typing exclamation points.
(countable, US, slang) A number off the charts of a hypothetical scale of one to ten.