Green’s Dictionary of Slang

1. a bailiff, a sergeant.

c.1591		Shakespeare Comedy of Errors IV iii: That Adam that keeps the prison: he that [...] bid you forsake your liberty.
1822		R. Nares Gloss. (1888) I 7: A serjeant, or bailiff, is jocularly called Adam, from wearing buff, as Adam wore his native buff.
1949		Monteleone Criminal Sl. (rev. edn).

2. (UK Und.) a thief’s accomplice.

a.1790		H.T. Potter New Dict. Cant (1795).
1809		G. Andrewes Dict. Sl. and Cant.
1823		‘Jon Bee’ Dict. of the Turf, the Ring, the Chase, etc.
1835		G. Kent Modern Flash Dict.
1848		Flash Dict. in Sinks of London Laid Open.
1859		Matsell Vocabulum.
1881		Trumble Sl. Dict. (1890).

3. a foreman.

1909

Farmer & Henley Sl. and Its Analogues (rev. edn).

4. (US Und.) a prison warder.

1949

Monteleone Criminal Sl. (rev. edn).

5. (camp gay) one’s first (paid) sexual partner.

1972

B. Rodgers Queens’ Vernacular.