Definition of cornets:
(n) :
A musical instrument of the brass family, slightly smaller than a trumpet, usually in the musical key of B-flat.
(n) :
A pastry shell to be filled with ice-cream, hence (UK, dated) an ice cream cone.
(n) :
A piece of paper twisted to be used as a container.
(n) :
(music) A kind of organ stop.
(n) :
(botany) A hollow horn-like growth.
(n) :
The white headdress worn by the Sisters of Charity.