What is a zigzag molding, or group of moldings, common in Norman architecture. Chevron bones (Anat.), The V-shaped subvertebral arches which inclose the caudal blood vessels in some animals called?

chevron — (Arch.) A zigzag molding, or group of moldings, common in Norman architecture. Chevron bones (Anat.), The V-shaped subvertebral arches which inclose the caudal blood vessels in some animals. (Webster's 1913.)

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