cornet

A musical instrument of the brass family, slightly smaller than a trumpet, usually in the musical key of B-flat.

Noun

A musical instrument of the brass family, slightly smaller than a trumpet, usually in the musical key of B-flat.
Synonyms: cornet-à-piston cornet-à-pistons
A piece of paper twisted to be used as a container.
A pastry shell to be filled with ice-cream, hence (UK, dated) an ice cream cone.
A troop of cavalry; so called from its being accompanied by a cornet player.
- They discerned a body of five cornets of horse very full, standing in very good order to receive them. - 1702–1704, Edward [Hyde, 1st] Earl of Clarendon, (please specify |book=I to XVI), in The History of the Rebellion...
A kind of organ stop.
A hollow horn-like growth.

From Middle English cornet, from Old French cornet, a diminutive of a popular reflex of Latin cornū (“horn”).

The white headdress worn by the Sisters of Charity.
The standard flown by a cavalry troop.
The fifth commissioned officer in a cavalry troop, who carried the colours (equivalent to the ensign in infantry).
- No general would have sent a mere cornet in command of five hundred horse: Fairfax despatched a colonel to take charge as soon as he heard what had happened. - 1972, Christopher Hill, The World Turned Upside Down, Folio...
- This cornet [translating Cornet] was a brave young cavalier and not more than two years older than me. - 1999, Mike Mitchell, translating HJC von Grimmelshausen, Simplicissimus, III.14, Dedalus 2016, p. 253

From Middle French cornette, diminutive of corne, from Latin cornua (“horns”).