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English definition of “trio”

trio

noun uk   /ˈtriː.əʊ/ us    /-oʊ/ (plural trios)
C2 [C, + sing/pl verb] a group of three people or things: There was disappointment for our trio of 200 metre runners, all of whom failed to reach the final.Groups of peopleGroups of things according to number [C, + sing/pl verb] a group of three musicians or singers who perform together: Many jazz trios consist of piano, guitar, and double bass.Groups of musicians [C] a piece of music that has been written to be performed by three people: The final item in today's programme is Beethoven's Trio in B flat.Musical pieces
(Definition of trio from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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