Saw CSIRO champ tossing clubs out (8)
I believe the answer is:
aphorism
'saw' is the definition.
(saw can mean a proverb or saying)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for aphorism that I've seen before include "A short, pithy, instructive saying" , "Pithy observation which contains a general truth" , "Adage" , "Maxim, short proverb" , "Terse saying" .)