from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A structure, especially one of masonry, forming the curved, pointed, or flat upper edge of an open space and supporting the weight above it, as in a bridge or doorway.
- n. A structure, such as a freestanding monument, shaped like an inverted U.
- n. A curve with the ends down and the middle up: the arch of a raised eyebrow.
- n. Anatomy An organ or structure having a curved or bowlike appearance, especially either of two arched sections of the bony structure of the foot.
- transitive v. To provide with an arch: arch a passageway.
- transitive v. To cause to form an arch or similar curve.
- transitive v. To bend backward: The dancers alternately arched and hunched their backs.
- transitive v. To span: "the rude bridge that arched the flood” ( Ralph Waldo Emerson).
- intransitive v. To form an arch or archlike curve: The high fly ball arched toward the stands.
- adj. Chief; principal: their arch foe.
- adj. Mischievous; roguish: an arch glance.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An inverted U shape.
- n. An arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward.
- n. An architectural element having the shape of an arch
- n. An arc; a part of a curve.
- v. To form into an arch shape
- adj. Knowing, clever, mischievous.
- adj. Principal; primary.
from the GNU version of the Collaborative International Dictionary of English
- n. Any part of a curved line.
- n. Usually a curved member made up of separate wedge-shaped solids, with the joints between them disposed in the direction of the radii of the curve; used to support the wall or other weight above an opening. In this sense arches are segmental, round (i. e., semicircular), or pointed.
- n. A flat arch is a member constructed of stones cut into wedges or other shapes so as to support each other without rising in a curve.
- n. Any place covered by an arch; an archway.
- n. Any curvature in the form of an arch.
- transitive v. To cover with an arch or arches.
- transitive v. To form or bend into the shape of an arch.
- intransitive v. To form into an arch; to curve.
- adj. Chief; eminent; greatest; principal.
- adj. Cunning or sly; sportively mischievous; roguish.
- n. A chief.
from The Century Dictionary and Cyclopedia
- n. 1. In geometry, any part of the circumference of a circle or other curve; an arc. See arc
- n. In architecture, a structure built of separate and inelastic blocks, assembled on a curved line in such a way as to retain their position when the structure is supported extraneously only at its two extremities.
- n. Any place covered with an arch or a vault like an arch: as, to pass through the arch of a bridge.
- n. Any curvature in the form of an arch: as, the arch of the aorta; the arch of an eyebrow, of the foot, of the heavens, etc.
- n. In mining, a portion of a lode left standing, either as being too poor for profitable working or because it is needed to support the adjacent rock.
- n. The roofing of the fire-chamber of a furnace, as a reverberatory or a glass-furnace; hence, sometimes, the fire-chamber itself.
- To cover with a vault, or span with an arch.
- To throw into the shape of an arch or vault; curve: as, the horse arches his neck.
- To form an arch or arches: as, the sky arches overhead.
- n. A box or chest; in plural, archives.
- n. The ark of Noah.
- n. The ark of the covenant.
- Chief; principal; preëminent. See arch-.
- Cunning; sly; shrewd; waggish; mischievous for sport; roguish: now commonly used of facial expression: as, “so arch a leer,”
- n. A chief; a leader.
- n. Chief; principal: a prefix much used in composition with words both of native and of foreign origin. See arch.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. form an arch or curve
- adj. naughtily or annoyingly playful
- n. a curved bony structure supporting or enclosing organs (especially the inner sides of the feet)
- n. (architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it
- adj. (used of behavior or attitude) characteristic of those who treat others with condescension
- adj. expert in skulduggery
- n. a passageway under a curved masonry construction
- n. a curved shape in the vertical plane that spans an opening
Middle English, from Old French arche, from Vulgar Latin *arca, from Latin arcus.
From arch-1.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English, from Old French arche ("an arch") (French arche), a feminine form of arc, from Latin arcus ("a bow, arc, arch"). (Wiktionary)
From the prefix arch-. "Principal" is the original sense; "mischievous" is via onetime frequent collocation with rogue, knave, etc. (Wiktionary)