Definition of martinis:
(n) :
A cocktail made with gin or vodka and vermouth.
(n) :
(sometimes proscribed) Any cocktail served in a cocktail glass, often sweet or fruity and aimed at women.
(n) :
A brand of Italian vermouth available in several versions, from the Martini & Rossi company.
(n) :
A surname from Italian.
(n) :
A type of rifle using similar features.
(n) :
(obsolete) A breech mechanism for a rifle.