Relay race stick (5)
I believe the answer is:
baton
'relay race stick' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for baton that I've seen before include "Police (or conductor's) stick" , "Short rod (that can be passed!)" , "Light wand" , "Conductor wields it - or a policeman" , "Relay race stick" .)