Kiss or slap (5)
I believe the answer is:
smack
I believe this is a double definition.
'kiss' is the first definition.
(I know that smack is a type of kiss)
'slap' is the second definition.
(I know that slap can be written as smack)
(Other definitions for smack that I've seen before include "Kiss - fishing vessel - taste - heroin" , "Hit with an open hand" , "Fishing-boat, hit" , "Sharp taste" , "Suggestion" .)