Peck, smear (3)
I believe the answer is:
dab
This clue is a double definition.
'peck' is the first definition.
(thesaurus)
'smear' is the second definition.
(I've seen this in another clue)
(Other definitions for dab that I've seen before include "Expert; flatfish" , "Press gently; flatfish" , "Expert; flat fish" , "Gently wipe" , "[SOMETHING FISHY]" .)