Pronunciation: [kˈask] (IPA) 
The spelling of the word "casque" may seem perplexing to some due to the silent "s" and "u". However, it is simply pronounced as "kahsk," with the "a" sounding like the "a" in "car." The "s" is silent and the "u" is inserted purely for etymological reasons, as the word has roots in Old French. The word is commonly used to refer to a type of headgear that is often worn by soldiers or officials.
Casque (noun):
1. A casque refers to a helmet or protective headgear worn for defense or as part of a uniform. Typically made of hard material such as metal or leather, it is designed to shield the head from injury in combat, sports, or dangerous activities. Casques are commonly worn by soldiers, firefighters, construction workers, and motorcyclists, among others, to provide impact resistance and safeguard vital organs like the brain and skull.
2. In zoology, the term casque refers to a distinctive structure found on the head of certain birds, reptiles, and mammals, particularly hornbills. It is a bony or horny projection, often hollow or chambered, serving ornamental, display, or distinctive purposes. For example, in the case of certain species of hornbills, the casque is used for amplifying their calls, regulating body temperature, and attracting mates. Variations in size, shape, and coloration of the casque can be species-specific and may aid in species recognition or visual signaling.
3. In a more metaphorical sense, the term casque can also refer to a poetic or literary head covering, often associated with knights or warriors. It symbolizes an emblem of courage, strength, or chivalry in works of fantasy, folklore, or historical fiction, where characters donning a casque are often portrayed as valiant heroes or formidable combatants.
Overall, "casque" encompasses a range of meanings centered around headgear, protection, display structures, or symbolic representations in various contexts.
A helmet or head-piece for a soldier.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "casque" has an interesting etymology. It originated from the Old Provençal word "caç", meaning a hunting helmet or a headpiece worn for protection. It further traces back to the Latin word "cassis", which means a type of helmet worn by Roman soldiers. The Latin word "cassis" itself is derived from the Greek word "kassis", meaning a type of shallow metal bowl or container. Thus, the word "casque" ultimately shares its roots with the ancient Greek and Latin words, expressing the evolution of the concept of a protective headgear over time.
