(noun)
a passageway under a curved masonry construction
they built a triumphal arch to memorialize their victory
(adjective)
(used of behavior or attitude) characteristic of those who treat others with condescension
(adjective)
naughtily or annoyingly playful
(verb)
form an arch or curve
her back arches
(noun)
a curved bony structure supporting or enclosing organs (especially the inner sides of the feet)
(noun)
a curved shape in the vertical plane that spans an opening
(noun)
(architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it