Bit of ointment (3)
I believe the answer is:
dab
'bit of ointment' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for dab that I've seen before include "Flounder" , "[SOMETHING FISHY]" , "Press gently; flatfish" , "Apply small amounts (usually a liquid) to a surface" , "Digital radio" .)