noun

1. A musical composition in two parts, each performed by a single voice (singer, instrument or univoce ensemble).

2. A song composed for and/or performed by a duo.

3. A pair or couple, especially one that is harmonious or elegant.

Synonyms: duo, couple, pair, twosome

verb

1. To perform a duet.

2. (of pairs of animals) To communicate (warnings, mating calls, etc.) through song.

3. To perform (sing, play, etc.) as a duet.