"duos" 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. duet, duette, duo
two performers or singers who perform together
3. couple, twosome, duo, duet
a pair who associate with one another
"the engaged couple"
"an inseparable twosome"
4. duet, duette, duo
a musical composition for two performers
Source: WordNet® (An amazing lexical database of English)
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