Noun

1. A breech mechanism for a rifle.
2. A type of rifle using similar features.
   • 1888, Rudyard Kipling, ‘The Arrest of Lieutenant Golightly’, Plain Tales from the Hills, Folio 2005, p. 96:

     Now the butt of a Martini in the small of your back hurts a great deal

Etymology 2

Noun

1. A cocktail containing vermouth with either gin or vodka.
2. A brand of Italian vermouth available in several versions.