The Collaborative International Dictionary of English v.0.48:

Morion \Mo"ri*on\, n. [F. morion, Sp. morrion; cf. Sp. morra the
   upper part of the head, morro anything that is round.]
   A kind of open helmet, without visor or beaver, and somewhat
   resembling a hat.
   [1913 Webster]

         A battered morion on his brow.           --Sir W.
                                                  Scott.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Morion \Mo"ri*on\, n. [G.] (Min.)
   A dark variety of smoky quartz.
   [1913 Webster]

WordNet (r) 3.0 (2006):

morion
    n 1: a metal helmet worn by common soldiers in the 16th century
         [syn: morion, cabasset]