Match action (4)
I believe the answer is:
suit
This clue is a double definition.
'match' is the first definition.
(I know that suit is a more specific form of match)
'action' is the second definition.
(synonyms)
(Other definitions for suit that I've seen before include "clubs, for example" , "C, D, H or S" , "Formal clothing" , "Hearts, maybe" , "Spades, perhaps" .)