Green’s Dictionary of Slang

buvare n.

a drink.

1861		(con. 1840s–50s) H. Mayhew London Labour and London Poor III 191/2: After our ‘mungare’ and ‘buvare’ (that’s what we call eat and drink, and I think it’s broken Italian).
2023		R. Milward Man-Eating Typewriter 127: [M]any seem more interested in the complimentary bovaries and munja.