the.com/casque

medieval headgear so iconic that birds wear it without asking permission

means A piece of armor for the head — a helmet — or, in birds like the cassowary, a bony or horny helmet-shaped crest atop the skull.

from From French casque, 'helmet,' borrowed from Spanish casco, which originally meant a potsherd or fragment before coming to mean a helmet. Casco is thought to derive from the verb cascar, 'to break or shatter,' tracing back to a Vulgar Latin root meaning to crack — so the headgear that protects your skull shares an ancestor with the idea of things splitting apart. The English word and the related casket are cousins through this same Romance lineage.

helmet roots
French for combat helmet, from Spanish casco
living crown
cassowary's casque is a bony, skin-covered head crest
sound theory
casques may help cassowaries hear deep booming calls
hornbill version
some hornbills carry casques denser than ivory
for instance

adrian mutu headbutt — chelsea player received 7-match ban after headbutting opponent in 2003

zinedine zidane headbutt — france captain headbutted marco materazzi in 2006 world cup final, received red card

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