cornet

1. a brass instrument resembling a trumpet but shorter and wider.
2. a cone-shaped wafer filled with ice cream.

late Middle English (originally denoting a wind instrument made of a horn): from Old French, diminutive of a variant of Latin cornu ‘horn’.

noun

the fifth grade of commissioned officer in a cavalry troop, who carried the colours. It is still used in some British cavalry regiments for officers of the rank of second lieutenant.

mid 16th century: from French cornette, diminutive of corne (originally a collective term), based on Latin cornua ‘horns’. The word originally denoted a kind of woman's headdress, or a strip of lace hanging down from a headdress against the cheeks; later it referred to the pennon of a cavalry troop, hence the officer who carried the colours.