Pet - a cold one perhaps (8)
I believe the answer is:
canoodle
'pet' is the definition.
(both can mean to touch lovingly)
'a cold one perhaps' is the wordplay.
'perhaps' indicates an anagram.
'a'+'cold'+'one'='acoldone'
'acoldone' is an anagram of 'CANOODLE'.
(Other definitions for canoodle that I've seen before include "Pet" , "Fondle" , "neck" , "Smooch" , "Behave amorously" .)