Ice hockey disc (4)
I believe the answer is:
puck
'ice hockey disc' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for puck that I've seen before include "Oberon's sprite (AMND)" , "Disc used in ice-hockey" , "gets knocked about with sticks" , "something a bit like a mouse" , "One of 5 [FAIRIES]" .)