Green’s Dictionary of Slang

Holloway n.

[pun on ‘hollow way’]

1. the vagina.

[[UK]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].
[UK]Farmer & Henley Sl. and Its Analogues.

2. the throat.

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