Green’s Dictionary of Slang

the female pubic hair.

1660		Mercurius Fumigosus 28 Mar. 26: [Something] to cover those naked Conneyberries from the fury of the enemy, or the rigour of the Ferrets that might otherwise torment the Forrests of comfort.
1720		in D’Urfey Pills to Purge Melancholy vi 146: Give me the Country lass, / That trips it oer the field, / And opes her forest to the first.
1889		C. Deveureux Venus in India I 63: Don’t you touch that woman, she is my preserve, and no one hunts in the forest between her thighs but myself!
1982		N. Keesing Lily on the Dustbin 40: Few girls desire ‘a forest’ or ‘mohair stockings’ and will assiduously ‘mow the lawn’ to control them.
2000		‘UK Snowy’ ‘Christmas Blackmail’ at www.asstr.org 🌐 Nestling between them was her hairy cunt, the thick ginger forest looking worse for wear as it hung its branches sodden against her inner thighs.