Rib, taunt (5)
I believe the answer is:
tease
This clue is a double definition.
'rib' is the first definition.
(I know that tease is a more specific form of rib)
'taunt' is the second definition.
(I know that taunt can be written as tease)
(Other definitions for tease that I've seen before include "Gently mock" , "Guy" , "Torment, tantalise" , "Banter, make gentle fun of" , "Cod" .)