Green’s Dictionary of Slang

(Aus./Qld) mutton.

1897

‘6x8’ [Dick Holt] in Bulletin (Sydney) 7 Aug. red page/3: Mutton - ‘Dunlop.’ New slang. Used mostly on the Darling and Western border of Q. Dunlop is one of the largest sheep-runs on the Darling, and owners give liberal quantities of mutton to travellers.