Carnal love in a trice, perhaps (6)
I believe the answer is:
erotic
'carnal' is the definition.
(I've seen this before)
'love in a trice perhaps' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'in' indicates putting letters inside.
'perhaps' indicates an anagram.
'trice' with letters rearranged gives 'ertic'.
'o' inserted within 'ertic' is 'EROTIC'.
(Other definitions for erotic that I've seen before include "Dirty - blue" , "Calculated to arouse sexual desire" , "Calculated to arouse sexual thoughts" , "Sexy" , "Steamy" .)