"____ Kiss" (4)
'kiss' is the definition.
(synonyms)
This is all the clue.
(Other definitions for osculate that I've seen before include "O, cute Sal could kiss" , "Kiss pretentiously?" , "Locate us in order to kiss formally" , "Kiss in lacteous way" , "Touch with the lips" .)
(Other definitions for this that I've seen before include "One particular" , "Pronoun to point out nearby things" , "near thing" , "Demonstrative pronoun" , "What's here" .)