"twosome" in the noun sense
1. couple, pair, twosome, twain, brace, span, yoke, couplet, distich, duo, duet, dyad, duad
two items of the same kind
2. couple, twosome, duo, duet
a pair who associate with one another
"the engaged couple"
"an inseparable twosome"
Source: WordNet® (An amazing lexical database of English)
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