Green’s Dictionary of Slang

1. (Aus.) to shear approximately 200 sheep in one day.

1950

J. Sorenson Coll. Poems 32: I thought perhaps he may have chanced to hear / Of how I almost deuced them* at Murgoo. *’Deuce them’ – To shear 200 sheep [GAW4].

2. (US drugs) to sell two marijuana cigarettes.

1940

‘Jargon of Marihuana Addicts’ in AS XV:3 Oct. 337/1: to deuce someone. To sell someone two cigarettes.