Green’s Dictionary of Slang

a large, coarse, strapping woman; thus strammelling adj., of a woman, large, strapping.

c.1698		B.E. Dict. Canting Crew n.p.: Stammel, a brawny, lusty, strapping Wench.
1709		A Society of Ladies Female Tatler (1992) (75) 147: Two strammelling wenches in the neighbourhood, had given the coachmen six-pence to sea-saw in the chariot.
1721		Penkethman’s Jests 94: A strammelling two-handed Harlot, Grenadier-height, and limb’d like a Bacon-fac’d Dutchman.
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1748–49		Cleland Memoirs of a Woman of Pleasure (1985) 68: The first sight that struck me, was Mr. H— pulling and hauling this coarse country strammel towards a couch that stood in the corner of the dining-room.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue n.p.: Stammel or strammel, a coarse brawny wench.
1811		Lex. Balatronicum [as cit. 1785].
1815		(con. 18C) W. Scott Guy Mannering (1999) 148: You’ll [...] sleep on the strammel in his barn, and break his house and cut his throat for his pains!
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.