Fail badly at the box office (informal) (4)
I believe the answer is:
bomb
(Other definitions for bomb that I've seen before include "Exploding device" , "Incendiary device" , "Unpleasant surprise" , "One going off" , "Mine" .)
I believe the answer is:
bomb
(Other definitions for bomb that I've seen before include "Exploding device" , "Incendiary device" , "Unpleasant surprise" , "One going off" , "Mine" .)