Races and a game (5)
I believe the answer is:
darts
I believe this clue is a double definition.
'races' is the first definition.
(darting is a kind of racing)
'a game' is the second definition.
(darts is a kind of game)
'and' acts as a link.
(Other definitions for darts that I've seen before include "quick movements" , "Game with board and missiles" , "Game with arrows and a board" , "Shoots" , "Moves along rapidly" .)