Wife notes drip (4)
I believe the answer is:
weed
'drip' is the definition.
(thesaurus)
'wife notes' is the wordplay.
'wife' becomes 'w' (abbreviation).
'notes' becomes 'eed' (I can't justify this - if you can you should give a lot more credence to this answer).
'w'+'eed'='WEED'
Can you help me to learn more?
(Other definitions for weed that I've seen before include "Got rid of water" , "Marijuana (slang)" , "Work in garden" , "pot" , "Hoe to remove it" .)