The whole team lamented aloud (4)
I believe the answer is:
side
'the whole team' is the definition.
'side' can be an answer for 'team' (both can mean a sports team). I am not sure about the 'the whole' bit.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for side that I've seen before include "party" , "group of players" , "Left or right, say" , "Face - team" , "Manchester United, for example?" .)