Partly intoxicated. (Russian, busa, millet-beer; Latin, buza, from buo, to fill; Welsh, bozi; Old Dutch, buyzen, to tipple; Coptic, bouza, intoxicating drink.)
“In Egypt there is a beer called `Boozer,' which is intoxicating.” —Morning Chronicle, Aug. 27th, 1852.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
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