Those sporty Australian laws? (5)
I believe the answer is:
rules
'laws?' is the definition.
(rule is a kind of law)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for rules that I've seen before include "Governs; regulations" , "Reigns" , "game in Australia" , "strips" , "In Australia, football" .)