Australia. [Native Australian, with the forms jimba, jombok, dombock, dumbog; said to have meant orig. ‘the white mist preceding a shower,’ to which a distant flock of sheep was likened by the natives: see Morris, Austral Eng., s.v.] A name given by Australian aborigines to sheep; in frequent colloquial use among stock-keepers in the Bush.
1845. C. Griffith, Pres. St. Pt. Phillip Distr. N. S. W., 162 (Morris).
1855. W. Ridley, in Trans. Philol. Soc., 77 (Morris). Jimbugg, a slang name for sheep, they sound jimbŭ.
1889. Pall Mall Gaz., 18 Feb. The process by which the ‘jumbucks’ are shorn.
1898. M. Roberts, Keeper of Waters, 136. I see this all white with cotton-bush, and it shall be white with jumbucks to eat it down.
