Green’s Dictionary of Slang

1. the vagina.

[1654		Mercurius Fumigosus 20 11–18 Oct. 178: A down-right Knocker (being a Gold-beater) [...] meeting a Woman, demanded of her, What street he was in? who made reply, The ready way to Hollow-way. But sure she minded not what she did say, / He came from thence, else he had kept his way].
1890–1904		Farmer & Henley Sl. and Its Analogues.

2. the throat.

1933

‘William Juniper’ True Drunkard’s Delight 243: The throat, which is also known as [...] Holloway.