Dictionary definition · arch
noun
- a curved shape in the vertical plane that spans an opening
- a curved bony structure supporting or enclosing organs (especially the inner sides of the feet)
- a passageway under a curved masonry construction"they built a triumphal arch to memorialize their victory"
- (architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it
verb
- form an arch or curve"her back arches"
adjective
- (used of behavior or attitude) characteristic of those who treat others with condescension
- naughtily or annoyingly playful"teasing and worrying with impish laughter"
Source: Open English WordNet (CC BY 4.0).