From WordNet (r) 2.0 (August 2003) [wn]:
four
adj : being one more than three [syn: 4, iv]
n : the cardinal number that is the sum of three and one [syn:
4, IV, tetrad, quatern, quaternion,
quaternary, quaternity, quartet, quadruplet,
foursome, Little Joe]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Four \Four\ (f[=o]r), a. [OE. four, fower, feower, AS.
fe['o]wer; akin to OS. fiwar, D. & G. vier, OHG. fior, Icel.
fj[=o]rir, Sw. fyra, Dan. fire, Goth. fidw[=o]r, Russ.
chetuire, chetvero, W. pedwar, L. quatuor, Gr. te`ttares,
te`ssares, pi`syres, Skr. catur. [root]302. Cf. Farthing,
Firkin, Forty, Cater four, Quater-cousin, Quatuor,
Quire of paper, tetrarch.]
One more than three; twice two.
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From The Collaborative International Dictionary of English v.0.48 [gcide]:
Four \Four\, n.
1. The sum of four units; four units or objects.
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2. A symbol representing four units, as 4 or iv.
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3. Four things of the same kind, esp. four horses; as, a
chariot and four.
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All fours. See All fours, in the Vocabulary. Fourb