duo Meaning, Definition & Usage

1. noun two items of the same kind
   twosome; span; distich; couple; twain; yoke; couplet; pair; duet; brace; dyad; duad.
   
2. noun two performers or singers who perform together
   duette; duet.
   
3. noun a pair who associate with one another
   twosome; couple; duet.
   
   • the engaged couple
   • an inseparable twosome
4. noun a musical composition for two performers
   duette; duet.
   

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