GRAIN n. 2 definitions
The composite particles of any substance; that arrangement of the particles of any body which determines its comparative roughness or hardness; texture; as, marble, sugar, sandstone, etc., of fine grain. Hard box, and linden of a softer grain. Dryden.
GREGORIAN a.
to fermo, a kind of unisonous music, according to the eight celebrated church modes, as arranged and prescribed by Pope Gregory I. (called "the Great") in the 6th century. -- Gregorian modes, the musical scales ordained by Pope Gregory the Great, and named after the ancient Greek scales, as Dorian, Lydian, etc. -- Gr…