Kickoff aid (3)
I believe the answer is:
tee
'kickoff aid' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tee that I've seen before include "Golfing item" , "Where one drives from" , "Golfing equipment" , "Stand" , "'Drive off it, half-laughing (3)'" .)