(noun.) (architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it.
(noun.) a passageway under a curved masonry construction; 'they built a triumphal arch to memorialize their victory'.
(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.
(verb.) form an arch or curve; 'her back arches'; 'her hips curve nicely'.
(adj.) naughtily or annoyingly playful; 'teasing and worrying with impish laughter'; 'a wicked prank' .
(adj.) (used of behavior or attitude) characteristic of those who treat others with condescension .
(adj.) expert in skulduggery; 'an arch criminal' .
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