casques

Noun

casque (plural casques)

1. A helmet.
   • He beheld his child dashed to pieces, and almost buried under an enormous helmet, an hundred times more large than any casque ever made for human being, and shaded with a proportionable quantity of black feathers.1764, Horace Walpole, The Castle of Otranto, section I
2. A hard structure on the head of some birds, such as cassowaries, some hornbills and guineafowl, and some reptiles such as chameleons and basilisks.
   • Helmeted Hornbill, Rhinoplax vigil (CR): Restricted to the Thai-Malay Peninsula, Sumatra and Borneo, this is the only hornbill species whose casque is solid keratin and therefore carvable.2015, James Eaton et al., “Trade-driven extinctions and near-extinctions of avian taxa in Sundaic Indonesia”, in Forktail, page 2, column 2
3. Synonym of galea.

   Synonyms:

   galea