Did leak drip? (4)
I believe the answer is:
weed
'drip?' is the definition.
(thesaurus)
'did leak' is the wordplay.
I cannot really understand how this works, but
'leak' could be 'wee' (as in taking a leak) and 'wee' is present in the answer.
A single letter 'd' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for weed that I've seen before include "Unwanted plant - cannabis" , "Plant growing where it is not wanted" , "gone!" , "Useless plant - useless person" , "Marijuana (slang)" .)