Green’s Dictionary of Slang

maggie n.1

[proper name Maggie, abbr. Margaret]

1. (also mag, Margaretta, meg) a prostitute.

Philotus (S.P.R. 1792) iii, 50: Ye trowit to get an e burd of blisse, To have ane of thir maggies [F&H].
[UK]R.M. Micrologia D6v: Bawdes, Bouncing-Megs, Decoyes, Punckes, Pimps and Panders.
[UK] ‘Female Doctress’ in Pepys Ballads (1987) V 417: [He is] at Sign of the Stallion, Closely embracing his dear Mag-Mallion.
[UK]W. King York Spy 43: A common Vaulting School, where peeping in at a Keyhole, we saw Book-keepers, Journey-men, and Apprentices, and their Taudry Margaretta’s kicking up their Heels to a Scotch Trump.
[US]N.E. Police Gaz. (Boston, MA) 5 Oct. 6/1: The Irish Mags and Biddies of 112 Prince street are played out.
[US]L. Berg Prison Doctor 215: Got so bad that [...] the maggies complained that the amateurs were ruining the business.

2. (Ulster) in cards, the ace or queen of hearts.

[Ire]Share Slanguage.