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

  • noun The cardinal number equal to 5 + 1.
  • noun The sixth in a set or sequence.
  • noun Something having six parts, units, or members, especially a motor vehicle having six cylinders.
  • idiom (at sixes and sevens) In a state of confusion or disorder.

from The Century Dictionary.

  • One more than five; being twice three: a cardinal numeral.
  • noun The number greater by one than five; twice three. For the cabalistic significance of six, see seven.
  • noun A symbol representing this number, as 6, or VI, or vi.
  • noun In games: A playing-card bearing six spots or pips; a six-spot.
  • noun On a die, the face which bears six spots; hence, a die which turns up that face.
  • noun Beer sold at six shillings a barrel; hence, small beer.
  • noun plural Bonds bearing interest at six per cent.
  • noun plural In Eng. hymnology, a species of trochaic meter having six syllables to the line, and properly four lines to the stanza.

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

  • adjective One more than five; twice three.
  • adjective (Ethnol.) a confederation of North American Indians formed by the union of the Tuscaroras and the Five Nations.
  • adjective (Geom.) See Nine points circle, under Nine.
  • noun The number greater by a unit than five; the sum of three and three; six units or objects.
  • noun A symbol representing six units, as 6, vi., or VI.
  • noun to be in a dispute or disagreement; -- often used with with.

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

  • noun cardinal A numerical value equal to 6; the number occurring after five and before seven.
  • noun The digit or figure 6.
  • noun military slang Rear, behind (rear side of something).
  • noun cricket, countable An event whereby a batsman hits a ball which does not bounce before passing over a boundary in the air, resulting in an award of 6 runs for the batting team.
  • noun American football A touchdown.

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

  • noun the cardinal number that is the sum of five and one
  • noun a playing card or domino or die whose upward face shows six pips
  • adjective denoting a quantity consisting of six items or units


from The American Heritage® Dictionary of the English Language, 4th Edition

[Middle English, from Old English; see s(w)eks in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Middle English, from Old English siex, from Proto-Germanic *sehs, from Proto-Indo-European *swéḱs.


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  • Like all sixes she had enormous recuperative ability. It had been carefully built into each one of them.

    - P.K. Dick, Flow My Tears, The Policeman Said.

    March 24, 2012