Leak; bore (4)
I believe the answer is:
drip
I believe this clue is a double definition.
'leak' is the first definition.
(I've seen this before)
'bore' is the second definition.
(I've seen this in another clue)
(Other definitions for drip that I've seen before include "Fall in small blobs" , "Sissy" , "Insubstantial person - trickle" , "Flow in small drops" , "weak character" .)