Threesome (4)
'threesome' is the definition.
(both can mean a group of three)
This is all the clue.
(Other definitions for trio that I've seen before include "Band of three" , "Chamber group" , "Group of Magi?" , "Threesome" , "wise men?" .)
'threesome' is the definition.
(synonyms)
This is all the clue.
(Other definitions for triad that I've seen before include "three making a sound?" , "Chinese criminal society" , "Up to date" , "Could be major" , "Group or set of three" .)