French 75

noun2

1. •
   A cocktail made with gin, champagne, and lemon juice.

   • [At the bar, Yvonne and the German officer place their orders.] French seventy-fives. — 1942
2. •
   (historical) The Canon de 75 modèle 1897, an artillery piece capable of firing 75 mm shells.

   • The French 75 in its barrel diameter is a fraction of an inch smaller than our 3-inch gun, the exact equivalent of 75 millimeters being 2.95275 inches. — 1919