Green’s Dictionary of Slang

the vagina.

1655		Mercurius Fumigosus 40 28 Feb.–7 Mar. 317: But yet the Weaver was too blame, / To shoot his shuttle as he came / Within her Loom.
1670–80		‘The Merry Weaver & the Chambermaid’ in Ebsworth Roxburghe Ballads (1891) VII:2 536: My loom is ready, you may begin: you shall weave and I shall spin.
1785		W. Forbes Dominie Deposed 8: Alas! that ever my loom I lent That day to thee. Woe to the night I first began, To mix my moggans with the man.
1795		‘Shale’s Rambles’ in A. Carpenter Verse in Eng. in 18C Ireland (1998) 503: Your looms I’ll square to half a hair, and wave [i.e. weave] your webs completely.
c.1804		‘McClure’s Ramble’ in A. Carpenter Verse in Eng. in 18C Ireland (1998) 502: I’d have you tarry and work out the piece in the loom / [...] / Come lay me your shuttle to keep me in mind of the trade.