Won't hold water (5)
I believe the answer is:
holed
(Other definitions for holed that I've seen before include "after being hit by torpedo" , "Potted (ball)" , "Perforated" , "Likely to sink" , "Like leaky vessel?" .)
I believe the answer is:
holed
(Other definitions for holed that I've seen before include "after being hit by torpedo" , "Potted (ball)" , "Perforated" , "Likely to sink" , "Like leaky vessel?" .)