Bachelor crowd returning a large sum of money (4)
I believe the answer is:
bomb
'a large sum of money' is the definition.
I can't tell whether this definition defines the answer.
'bachelor crowd returning' is the wordplay.
'bachelor' becomes 'B' (abbreviation e.g. BA=Bachelor of Arts).
'crowd' becomes 'mob' (mob can mean a crowd of people).
'returning' says the letters should be written in reverse.
'b'+'mob'='bmob'
'bmob' in reverse letter order is 'BOMB'.
Can you help me to learn more?
(Other definitions for bomb that I've seen before include "Load of money (slang)" , "Big bucks - flop" , "move quickly" , "not to be hit!" , "charge" .)