Tease one in a cage? (3)
I believe the answer is:
rib
I believe this is a double definition.
'tease' is the first definition.
(rib can mean to tease or mock)
'one in a cage?' is the second definition.
(I've seen this in another clue)
(Other definitions for rib that I've seen before include "Large leaf-vein" , "joke" , "spare one?" , "Chest bone, may be floating" , "Tease; pectoral bone" .)