[n] a dance for two people (usually a ballerina and a danseur noble)
[n] a musical composition for two performers
[n] a pair who associate with one another; "the engaged couple"; "an inseparable twosome"
[n] two performers or singers who perform together
[n] two items of the same kind
brace, couple, couple, couplet, distich, doubleton, duad, duette, duette, duo, duo, duo, dyad, pair, pas de deux, span, twain, twosome, twosome, yoke