Bomb (4)
'bomb' is the definition.
(I know that bomb can be written as fail)
This is all the clue.
(Other definitions for fail that I've seen before include "Neglect (to do something)" , "Be unsuccessful, say in exam" , "Be unable to achieve one's object" , "Stop working properly" , "Flunk" .)
'bomb' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for flop that I've seen before include "Fall limply - box-office failure" , "Complete failure" , "Dud - bomb" , "Fiasco" , "Community cards in poker" .)
'bomb' is the definition.
(I know that bomb can be written as dud)
This is the entire clue.
(Other definitions for dud that I've seen before include "Not functioning" , "Firework not going up" , "Broken" , "Ineffectual person" , "Just a palindromic flop" .)