What language is guimpe, please, birdfeed?

Nancyk, I have a vague memory that's telling me your spelling of cornette is right, but I couldn't find it anywhere! I tried cornet (yay, Onelook--thanks again, tsuwm) and found in the Infoplease Dictionary (I added the bolding.):
—n.
1. Music.a valved wind instrument of the trumpet family.
2. a small cone of paper twisted at the end and used for holding candy, nuts, etc.
3. a pastry cone, usually filled with whipped cream.
4. Brit.a conical wafer, as for ice cream; cone.
5. a large, white, winged headdress formerly worn by the members of the Sisters of Charity.
6. a woman's headdress, often cone-shaped, usually of delicate fabrics and having lappets of lace or other material, worn by women from the 14th to the 18th century.
7. a pennant or flag used for signaling in a navy.
8. (formerly) the officer who carried the colors in a troop of cavalry: the cornet of horse.


I am wondering if it is related to coronet or cornice.