trio

noun
  1. A group or set of three people or things. noun
    The musical trio performed beautifully at the concert.
    She bought a trio of scented candles for her living room.
  2. A composition for three voices or instruments. noun
    The composer wrote a trio for violin, cello, and piano.
    They practiced the trio until it was perfect for the recital.
  3. A group of three performers or singers who perform together. noun
    The jazz trio entertained the guests all night.
    The trio has been touring the country with their latest album.