Gambling token (4)
I believe the answer is:
chip
'gambling token' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for chip that I've seen before include "Deep-fried potato slice" , "Piece of potato (on a resentful person's shoulder?)" , "High ball" , "Fragment; counter" , "Golf shot; item of fried food" .)