the world > animals > mammals > group Ungulata (hoofed) > group Ruminantia (sheep, goats, cows, etc.) > bull > [noun] > castrated or bullock > working
1820 3 244 Made into coarse cloth taut, by the Brinjaries and people who use pack bullocks, for making bags (gonies) for holding grain, &c.
1869 R. F. Burton II. 331 We are getting into the country of the pack-bullock.
1974 33 585 Pack-bullocks disappeared, to be replaced by a cheaper and more efficient cart trade with the North Kanara ports.