Detective sent over to suppport physician about leak (4)
I believe the answer is:
drip
'leak' is the definition.
(I know that leak can be written as drip)
'detective sent over to suppport physician' is the wordplay.
I cannot really understand how this works, but
'physician' could be 'dr' (synonyms) and 'dr' is present in the answer.
This explanation may well be incorrect...
'about' is the link.
Can you help me to learn more?
(Other definitions for drip that I've seen before include "Trickle -- weakling" , "weak character" , "Soppy person" , "Liquid falling in small golbules, or a dull person" , "Weed - seep" .)