Definition of trio noun from the Oxford Advanced Learner's Dictionary

     

    trio

     noun
    noun
    BrE BrE//ˈtriːəʊ//
     
    ; NAmE NAmE//ˈtriːoʊ//
     
    (pl. trios) Pieces of music
     
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  1. 1[countable + singular or plural verb] a group of three people or things A trio of English runners featured in the women’s 1 500 metres. compare duo
  2. 2 [countable + singular or plural verb] a group of three musicians or singers who play or sing together
  3. 3 [countable] a piece of music for three musicians or singers a trio for piano, oboe and bassoon compare duet See related entries: Pieces of music
  4. Word Origin early 18th cent.: from Italian, from Latin tres ‘three’, on the pattern of duo.
See the Oxford Advanced American Dictionary entry: trio