- a vault or ceiling created by the intersection of vaults.
Also cross vault·ing, cross-vault·ing.
Also called groin vault.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cross vault
The date of the first appearance of the cross-vault can hardly have been earlier than the second century B.C.History of Ancient Art
Franz von Reber