Green’s Dictionary of Slang

1. (UK und.) for a cab-driver to lure one’s victim into a tavern then drug their drink and rob them.

1845

G.W.M. Reynolds Mysteries of London vol. 2 142: Dose the swell fred Inveigle the fare into a public-house and hocus him.

2. (also dose up) to infect with venereal disease.

1934		(con. 1920s) J.T. Farrell Young Manhood in Studs Lonigan (1936) 191: She falls for him, and what does he do but knock her up, and I suppose dose her.
1942		N. Algren Never Come Morning (1988) 185: She still got to have her blood test regular every Saturday mornin’, to make sure he don’t get dosed Saturday night.
1950		Goldin et al. DAUL 60/2: Dose up. To infect with a venereal disease.
1966		M. Rumaker Exit 3 and Other Stories 77: I read somewhere she can carry it and dose a man up proper.
1973		(con. 1940s–60s) Hogbotel & ffuckes ‘The Bastard from the Bush’ in Snatches and Lays 83: May some lousy harlot dose you till your ballocks turn sky-blue.

3. (US teen) to give someone a dose of LSD.

2002

Teen Lingo: The Source for Youth Ministry 🌐 dose v. to put the liquid form of LSD on an object that can be deliberately put on someones tounge [sic] or skin. This is usually done on small pieces of paper, but sometime this is done to food items.

4. see give someone a dose under dose n.¹