Green’s Dictionary of Slang

stubble n.

a woman’s pubic hair.

1772		G. Stevens ‘The Sentiment Song’ in Songs Comic and Satyrical 124: Ye Fowlers who eager at Partridges aim, / Don’t mark the maim’d Covey, but mind better Game; / ’Tis Beauty’s the Sport to repay Sportsmen’s trouble, / And there may our Pointers stand stiff in the Stubble.
1782		‘The Sentiment Song’ in Farmer Merry Songs and Ballads (1897) II 225: Ye fowlers who eager at partridges aim, / Don’t mark the maim’d covey, but mind, better game; / ’Tis beauty’s the sport to repay sportsmen’s trouble, / And there may our pointers stand stiff in the stubble.
1838		Crim.-Con. Gaz. Dec. 120/1: [as 1772].
1890–1904		Farmer & Henley Sl. and Its Analogues.

In phrases

take a turn in the stubble (v.) (also take a turn through the stubble)

to have sexual intercourse.

1890–1904		Farmer & Henley Sl. and Its Analogues VII n.p.: to take a turn in the stubble = to copulate.
1896		Farmer Vocabula Amatoria (1966) 107: engainer. To copulate; ‘to take a turn through the stubble’.
1980		Maledicta IV:2 (Winter) 197: The terms used for copulating […] are not really euphemistic because it is implicit that no ambiguity could possibly result and, unlike euphemisms, they are, or used to be, avoided in polite, mixed company. Related to this group are the allusive […] to take a turn [...] through the stubble.