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[too] /tu/
a cardinal number, 1 plus 1.
a symbol for this number, as 2 or II.
a set of this many persons or things.
a playing card, die face, or half of a domino face with two pips.
amounting to two in number.
in two, into two separate parts, as halves:
A bolt of lightning split the tree in two.
put two and two together, to draw a correct conclusion from the given circumstances; infer:
It didn't require a great mind to put two and two together.
Origin of two
before 900; Middle English; Old English twā (feminine and neuter; cf. twain); cognate with German zwei; compare Latin duo, Greek dýo
Can be confused
to, too, two. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for two
Contemporary Examples
Historical Examples
  • There are very many things which I cannot do, but there are also one or two which I have the trick of.

    The White Company Arthur Conan Doyle
  • Pen and Jane looked at each other and at the two men's grins of complaisance.

    Still Jim Honor Willsie Morrow
  • There was a moment's silence between the two in the kitchen, but the spell was broken.

  • He started out into the street and the two jumped him and started to stab him to death.

    Still Jim Honor Willsie Morrow
  • It was only two days since his long talk with himself at the pond.

British Dictionary definitions for two


the cardinal number that is the sum of one and one. It is a prime number See also number (sense 1)
a numeral, 2, II, (ii), etc, representing this number
(music) the numeral 2 used as the lower figure in a time signature, indicating that the beat is measured in minims
something representing, represented by, or consisting of two units, such as a playing card with two symbols on it
Also called two o'clock. two hours after noon or midnight
in two, in or into two parts: break the bread in two
put two and two together, to make an inference from available evidence, esp an obvious inference
that makes two of us, the same applies to me
  1. amounting to two: two nails
  2. (as pronoun): he bought two
adjectives binary double dual prefixes di- bi-
Word Origin
Old English twā (feminine); related to Old High German zwā, Old Norse tvau, Latin, Greek duo
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for two

Old English twa, fem. and neuter form of twegen "two" (see twain), from Proto-Germanic *twai (cf. Old Saxon and Old Frisian twene, twa, Old Norse tveir, tvau, Dutch twee, Old High German zwene, zwo, German zwei, Gothic twai), from PIE *duwo (cf. Sanskrit dvau, Avestan dva, Greek duo, Latin duo, Old Welsh dou, Lithuanian dvi, Old Church Slavonic duva, first element in Hittite ta-ugash "two years old").

Dance style two-step is recorded from 1900. Twofer is first recorded 1911 (originally in reference to cigars), from two for (a dollar, etc.). Two cheers for _____, expressing qualified enthusiasm first recorded 1951 in E.M. Forster's title "Two Cheers for Democracy." Two-dimensional is recorded from 1883; figurative sense of "lacking substance or depth" is attested from 1934.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for two


Related Terms

number two, one-two

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Idioms and Phrases with two
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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