Mōr'i-on, n.

noun

n. [Fr. morion, O. Sp. murion, N. Sp. morrion, It. morione. Cf. Sp. morra, the upper part of the head, morro, any thing that is round.] A kind of open helmet, without visor or beaver, and somewhat resembling a hat. “A battered morion on his brow.” W. Scott.

An ornate, high-domed helmet with a broad, upturned brim.