from
The Collaborative International Dictionary of English v.0.48
Stria \Stri"a\, n.; pl. {Striae}. [L., a furrow, channel,
hollow.]
1. A minute groove, or channel; a threadlike line, as of
color; a narrow structural band or line; a striation; as,
the striae, or groovings, produced on a rock by a glacier
passing over it; the striae on the surface of a shell; a
stria of nervous matter in the brain.
[1913 Webster]
2. (Arch.) A fillet between the flutes of columns, pilasters,
or the like. --Oxf. Gloss.
[1913 Webster]