Bomb vessel in front part (7)
I believe the answer is:
fortune
'bomb' is the definition.
(thesaurus)
'vessel in front part' is the wordplay.
'vessel' becomes 'tun' (tun is a kind of vessel).
'in' indicates putting letters inside.
'front part' becomes 'fore' (I've seen this before).
'tun' inserted inside 'fore' is 'FORTUNE'.
(Other definitions for fortune that I've seen before include "Luck - riches" , "'. . . . . . . favours the brave'" , "large sum of money" , "Fate; riches" , "'Chance, luck (7)'" .)