from The Century Dictionary.
- noun In vaulting, a main rib masking a groin, or serving to support the groin; an ogive or are ogive. See
groin, n., 2, and are ogive, under arc.
Sorry, no etymologies found.
The larger and heavier group of vaulting-shafts against the aisle-wall, and the strong arch spanning the aisle across this point in place of the groin-rib, were all parts of the tower ....