Definition of Bac:

part of speech: noun

A brewers vat or large open tub for containing beer; a ferry- boat.

Usage examples:

• Shopkeepers and peasants of Celles, of Conde, of Attichy, along the way to Berry- au- Bac and from Billy to Sermoise, all those who have now fled from the Valley of the Vesle and the valley of the Aisne had just the same story to tell- monotonous, yet awful because of its tragedy. Philip Gibbs in "The Soul of the War".

• " The fact is, she rushed to the Rue du Bac where she did not buy a single rug, but instead a dozen umbrellas, and then came home in a state of exhaustion,- such exhaustion that I had positively to carry her up- stairs, because she was unable to stir; and now she blames my smoking- room for her cold! Ossip Schubin in "Erlach Court".

• Her last sentence was one of twelve months for robbing an English baronet at a dancing- hall in the Rue du Bac William Le Queux in "The Secrets of Potsdam".