tri·o (tr)
n. pl. tri·
os1. Music
a. A composition for three voices or three instruments.
b. A group of three singers or three instrumentalists.
c. The middle, contrasting section of a minuet, scherzo, march, or various other forms.
2. A group of three.
3. A term used for a situation where a person has
sexual intercourse with a set of three friends. For example, a boy who has sex with a group of three friends is
said to have 'completed the trio'
"Did you hear about Tom? He porked Hannah Walker last
night"
"Really? Does that
mean......"
"Yeah, because he rooted
Jenny,Zoe and now Hannah, he's completed the trio."
"He'll definitely have the bad aids now then"
"Yup"