Green’s Dictionary of Slang

1. a prostitute or courtesan.

1600		Sir R. Cecil Letter 24 Sept.(1968) 33: If you did . . . remember the Lo. Admyrall and the Lord Threasurer with a couple of Pugges or some vscough baugh or some such toyes, it would shew that you do not neglect them, whoe, I protest, are to you wonderfull kynde .
1611		R. Cotgrave Dict. of Fr. and Eng. Tongues n.p.: Gouge, Gouge as Vouge, a Souldiors Pug, or Punke; a Whore that followes the Camp [...] Saffrette, a flirt, queane, gixie, pug, punke.
1653		Urquhart (trans.) Gargantua and Pantagruel (1927) I Bk I 10: Gargamelle, daughter to the King of the Parpaillons, a jolly pug and well-mouthed wench.
1678		Dryden Kind Keeper V i: Behold this Orient Neck-lace, Pug!
1682		Otway Venice Preserv’d III i: Come, let’s to bed – you fubbs, you pug you – you little puss – purree tuzzy.
1705		N. Ward Honesty in Distress in Writings III 198: A dirty Pugg may serve Loves Fire to quench.

2. (also pug-nasty) an unpleasant woman, esp. one who is regarded as sexually immoral.

1660		‘Pietro Aretino’ Wandring Whore Continued 6: Common Whores, Wanderers, Pick-Pockets and Night-walkers [...] [illeg.] Hollilands, Pockey pug-nasty.
1675		T. Duffet Psyche Debauch’d IV ii: An insolent audacious hectoring Pugg.
1678		Dryden Kind Keeper Epilogue: All the Female Fry turn Pugs like mine.
1680		M. Stevenson Wits Paraphras’d 54: No mischeifs cou’d perswade thee tarry. / All Switch and Spur, for old Pug Nasty.
c.1698		B.E. Dict. Canting Crew n.p.: Pug, Pugnasty, a meer Pug, a nasty Slut, a sorry Jade, of a Woman.
1719		in D’Urfey Pills to Purge Melancholy V 83: If Miss prove peevish and will not gee, / Ne’er pine, ne’er pine at the wanton Pug.
1846		Swell’s Night Guide 45: These kens are tenanted by a blackguard [...] school of pugging shakes, whose chief fame is in [...] poxing a swaddy.

3. (US teen) a pin-up girl.

1944

N. Pepper in Baltimore Sun (MD) 20 Feb. A2/2: Pug — A pin-up girl.