Definify.com

Webster 1913 Edition

Noun.

[Gr. [GREEK];

δι-

δίσ-

twice + [GREEK] to hollow out, carve.]

(Arch.)

A projecting face like the triglyph, but having only two channels or grooves sunk in it.

diglyph ‎(plural diglyphs)

A member with two vertical channels or grooves, without the two lateral half grooves which characterize the triglyph.