Casque

Casque is a French word for helmet. It can refer to:
 * Casque (anatomy), an enlargement on the beaks of some species of birds, including many hornbills
 * Hornbill ivory, the casque of the helmeted hornbill, collected as a decorative material
 * S. C. H. "Sammy" Davis (1887–1981), a motor-racing journalist who used the pen name Casque
 * Casque-class destroyer, French Navy ships built between 1910 and 1912