Cadges (7)
I believe the answer is:
sponges
'cadges' is the definition.
('sponge' can be a synonym of 'cadge')
This is the entire clue.
(Other definitions for sponges that I've seen before include "heavy drinkers" , "Cadges like sea animal" , "Primitive, porous, marine animals" , "Cakes" , "Light, highly absorbent skeletons of marine animals" .)