Record in snowboard is contested (4)
I believe the answer is:
disc
'record' is the definition.
(synonyms)
'in snowboard is contested' is the wordplay.
'in' says the answer is hidden in the clue.
'DISC' is hidden within 'snowboard is contested'.
(Other definitions for disc that I've seen before include "Back part" , "45, eg?" , "put on by jockey?" , "Body without limbs" , "Compact ---; slipped ---" .)