Also buzza, buz.
trans. To finish to the last drop in the bottle.
1785. Grose, Dict. Vulgar Tong, s.v. Buzza, To Buzza onc, is to challenge him to pour out all the wine in the bottle into his glass, undertaking to drink it, should it prove more than the glass would hold.
1817. Peacock, Melincourt, II. 28–9. Buz the bottle…. The Baronet has a most mathematical eye. Buzzed to a drop!
1848. Thackeray, Van. Fair, xxxiv. Get some more port … whilst I buzz this bottle.
1848. Blackw. Mag., LXIII. 366. Buzza that jug … and touch the bell for another.
