trio
//ˈtriː.oʊ//
Noun
trioSingular
triosPlural
1
A group or set of three people or things.
The trio of friends went on a trip together.
2
A group of three musicians who perform together.
The jazz trio performed at the club last night.
3
A musical composition written for three performers.
The composer wrote a beautiful trio for piano, violin, and cello.