Drops bombs (5)
I believe the answer is:
tears
I believe this clue is a double definition.
'drops' is the first definition.
(I've seen this before)
'bombs' is the second definition.
(both can mean to move very quickly)
(Other definitions for tears that I've seen before include "Show of emotion" , "Water in eyes" , "See 12" , "Rents" , "Shed them in sadness" .)