duo
n 1: two items of the same kind [syn: {couple}, {doubleton}, {pair},
{twosome}, {twain}, {brace}, {span}, {yoke}, {couplet},
{distich}, {duet}, {dyad}, {duad}]
2: two performers or singers who perform together [syn: {duet},
{duette}]
3: a pair who associate with one another; "the engaged couple";
"an inseprable twosome" [syn: {couple}, {twosome}, {duet}]
4: a musical composition for two performers [syn: {duet}, {duette}]