Carn meaning

(Australia, informal) An exclamation of support or approval, usually for a sporting (especially football) team.
interjection
2
6
(Australia, informal) Come on.
interjection
2
7
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Origin of carn

  • Adapted from the vernacular pronunciation of c'mon, itself an informal variant of come on. The first uses of the term in its extended sense appear to have been amongst Australian rules football fans in Victoria, with the use later spreading to other states and sports.
    From Wiktionary