arch

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

form an arch or curve; "her back arches"; "her hips curve nicely"

(used of behavior or attitude) characteristic of those who treat others with condescension

expert in skulduggery; "an arch criminal"

naughtily or annoyingly playful; "teasing and worrying with impish laughter"; "a wicked prank"