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1. A usually curved structure forming the upper edge of an open space and supporting the weight above it, as in a bridge or doorway.
2. A structure, such as a freestanding monument, shaped like an inverted U.
3. A curve with the ends down and the middle up: the arch of a raised eyebrow.
4. Anatomy An organ or structure having a curved or bowlike appearance, especially either of two arched sections of the bony structure of the foot.
v. arched, arch·ing, arch·es
1. To provide with an arch: arch a passageway.
2. To cause to form an arch or similar curve.
3. To bend backward: The dancers alternately arched and hunched their backs.
4. To span: "the rude bridge that arched the flood" (Ralph Waldo Emerson).
To form an arch or archlike curve: The high fly ball arched toward the stands.
[Middle English, from Old French arche, from Vulgar Latin *arca, from Latin arcus.]
1. Chief; principal: their arch foe.
a. Mischievous; roguish: "She ... was arch enough to inform the queen whenever I committed any folly that she thought would be diverting to her majesty" (Jonathan Swift).
b. Teasing, ironic, or sardonic: "I know, Edy Boardman said none too amiably with an arch glance from her shortsighted eyes. I know who is Tommy's sweetheart" (James Joyce).
(Anglicanism) Court of Arches Church of England the court of appeal of the Province of Canterbury, formerly held under the arches of Bow Church