CASK, noun A head-piece; a helmet; a piece of defensive armor, to cover and protect the head and neck, in battle. CASK, noun A close vessel for containing liquors, formed by staves, heading and hoops. This is a general term comprehending the pipe, hogshead, butt, barrel, etc.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI