BAC

blood-alcohol concentration: the percentage of alcohol in the bloodstream: under the laws of most states, a BAC of 0.10 is the legal definition of intoxication, although a few states use a slightly lower percentage, as 0.08.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for bac

She really wanted her son to take his bac and get on with his life.
‘The Intouchables’: Omar Sy on the Movie and His Success|Lorenza Muñoz|May 25, 2012|DAILY BEAST
Where the correction is apparently by the original scribe, Bac indicates the original reading, and Bpc the correction.
The Last Poems of Ovid|Ovid
"The story of the Bac Street crime is simpler and more rapid in movement," he read.
The Man With the Black Feather|Gaston Leroux
The fine Indian mission church at Bac, long abandoned and neglected, dates from the last decade of the 18th century.
Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5|Various

Gov. Futtrell sittin' bac' in his great fine office, saw me and jined me in conversation.
Slave Narratives: Arkansas Narratives|Work Projects Administration
Moro found that the dejecta of children contain large numbers of Bac.
The Bacillus of Long Life|Loudon Douglas