Green’s Dictionary of Slang

1. (Aus.) a fight, a brawl.

1941

Baker Popular Dict. Aus. Sl.

2. (Aus.) a certainty, a ‘sure thing’.

1941

Call and Bailey's Wkly (Perth) 7 Aug. 1/2: The State’s best stayer is thrown into the race with 9.2. If he goes through his preparation and can hold his form, he looks a bowl-over.