Also cus·pate [kuhs-pit, -peyt] /ˈkʌs pɪt, -peɪt/, cus·pat·ed.
Origin of cusped
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cusped
The arches are cusped like the windows, but are stilted and segmental.Portuguese Architecture
Walter Crum Watson
I agree that the cusped arch is not meant to imitate a leaf.
The cusped arch, too, was it actually not intended to imitate vegetation?
The tympana of the choir triforium arches are filled with plate tracery, quatrefoil and cusped.Cathedral Cities of France
It contains three pointed and cusped lancets on each side, and is without buttresses.Scottish Cathedrals and Abbeys
Dugald Butler and Herbert Story