Team groaned out loud (4)
I believe the answer is:
side
'team' is the definition.
(both can mean a sports team)
'groaned out loud' is the wordplay.
'groaned' becomes 'sighed' (I've seen this before).
'out loud' indicates a 'sounds like' (homophone) clue.
'sighed' sounds like 'SIDE'.
(Other definitions for side that I've seen before include "Wolves, say" , "Football team" , "group of players" , "by no means a front" , "Particular aspect" .)