Kiss; measure (4)
I believe the answer is:
peck
I believe this is a double definition.
'kiss' is the first definition.
(I know that peck is a type of kiss)
'measure' is the second definition.
(peck is a kind of measure)
(Other definitions for peck that I've seen before include "Country; letter I (radio communications)" , "Eat just a bit" , "lot of pints" , "Large number" , "Strike with beak" .)