Green’s Dictionary of Slang

a hostess or landlady.

c.1698		B.E. Dict. Canting Crew n.p.: Supouch c. an Hostess or Landlady.
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1754		Scoundrel’s Dict. 17: Hostess – Supouch.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1809		G. Andrewes Dict. Sl. and Cant.
1811		Lex. Balatronicum.
1821		Flash Dict.
1859		Matsell Vocabulum.