duet

noun

1. 1

   (ballet) a dance for two people (usually a ballerina and a danseur noble)

2. 2

   a musical composition for two performers

3. 3

   a pair who associate with one another

   the engaged couple

   an inseparable twosome

4. 4

   two performers or singers who perform together

5. 5

   two items of the same kind