skewback definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- the slanting surface supporting either end of a segmental arch
- a supporting piece, as a stone, with such a surface
skewback definition by American Heritage Dictionary
Either of two inset abutments sloped to support an arch.