The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
- Bent or curved like a bow.
- Architecture a. Having an arch or arches.b. Protruding in an outward curve so as to form a recess within.