1. (n.) One and one; twice one.
2. (n.) The sum of one and one; the number next greater than one, and next less than three; two units or objects.
3. (n.) A symbol representing two units, as 2, II., or ii.
Thesaurus Entries
biform, bifurcated, bilateral, bipartisan, bipartite, both, brace, couple, couplet, dichotomous, distich, double, double harness, doublet, duad, duadic, dual, dualistic, duet, duo, duplex, duplicated, dyad, dyadic, identical, match, matched, mates, pair, set of two, span, team, the two, twain, twin, twinned, two-sided, twosome, yoke
