eleven

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The cardinal number equal to 10 + 1.
• noun The 11th in a set or sequence.
• noun Something with 11 parts or members, especially a football team.

from The Century Dictionary.

• One more than ten: a cardinal numeral beginning the second decade: as, eleven men.
• noun The number which is the sum of ten and one.
• noun A symbol representing eleven units, as 11, or XI., or xi.
• noun A team or side in cricket or foot-ball: so called because regularly consisting of eleven players: as, the Philadelphia eleven; there were two strong elevens matched.

from the GNU version of the Collaborative International Dictionary of English.

• noun The sum of ten and one; eleven units or objects.
• noun A symbol representing eleven units, as 11 or xi.
• noun (Cricket & American Football) The eleven men selected to play on one side in a match, as the representatives of a club or a locality.
• adjective Ten and one added.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The cardinal number occurring after ten and before twelve. Represented as 11 in Arabic digits.
• noun cricket A cricket team of eleven players.
• noun soccer A football team of eleven players.
• noun Internet, slang, sarcastic Used instead of ! to amplify an exclamation, imitating n00bs who forget to press the shift key while typing exclamation points.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the cardinal number that is the sum of ten and one
• adjective being one more than ten
• noun a team that plays football