Delicate hint, perhaps (4)
I believe the answer is:
thin
'delicate' is the definition.
('thin' can be similar in meaning to 'delicate')
'hint perhaps' is the wordplay.
'perhaps' indicates an anagram.
'hint' is an anagram of 'THIN'.
(Other definitions for thin that I've seen before include "Lean; narrow" , "Spare" , "Measure" , "Flimsy" , "(Of smile) weak, forced" .)