angle rib[′aŋ·gəl ‚rib]
One of the diagonal ribs dividing each rectangle of a gothic vaulting; it is a structural member.
Molding ornamenting an angle in decorative work.
1. In decorative work, a molding that ornaments an angle.
2. In Gothic architecture, one of the diagonal ribs, 1 that divides each of the rectangles of a vault.