'Large axe' cryptically represents a sport (8)
I believe the answer is:
lacrosse
'sport' is the definition.
(lacrosse is a kind of sport)
'large axe cryptically represents a' is the wordplay.
I cannot really see how this works, but
'large' could be 'os' (abbreviation for oversize) and 'os' is found in the answer.
'a' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for lacrosse that I've seen before include "Game played with nets on sticks" , "Game played with netted sticks" , "Like thirteen of the other clues in the French" , "Ball game using netted stick" , "Score's uncertain after the Spanish" .)