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work or formation.

a curved masonry construction for spanning an opening, consisting of a number of wedgelike stones, bricks, or the like, set with the narrower side toward the opening in such a way that forces on the arch are transmitted as vertical or oblique stresses on either side of the opening.
an upwardly curved construction, as of steel or timber functioning in the manner of a masonry arch.
a doorway, gateway, etc., having a curved head; an .
the curved head of an opening, as a doorway.

any overhead curvature resembling an arch.
something bowed or curved; any bowlike part:
the arch of the foot.
a device inserted in or built into shoes for supporting the arch of the foot.
a dam construction having the form of a barrel vault running vertically with its convex face toward the impounded water.

a chamber or opening in a glassmaking furnace.

to cover with a vault, or span with an arch:
the rude bridge that arched the flood.
to throw or make into the shape of an arch or vault; curve:
The horse arched its neck.
to form an arch:
elms arching over the road.
Nautical, (def 14).
Historical Examples

The two rode together up the hill, beneath the arching oaks.
Lewis Rand Mary Johnston

It would have one, a better one, with a finer title: “arching the Gulf!”
The Bill-Toppers Andre Castaigne

It gave him a tremendous forehead, arching up two inches beyond the former hair-line.
Babbitt Sinclair Lewis

This meant the wreck of “arching the Gulf;” and Trampy came down with it.
The Bill-Toppers Andre Castaigne

The naiad willow, arching lowland brooks, speaks as water, very secretly.
Minstrel Weather Marian Storm

“I have nothing to explain,” said Margaret, arching her delicate brows.
A True Friend Adeline Sergeant

arching crags of the ridge-wall jutted out over the cave entrance.
Astounding Stories of Super-Science, November, 1930 Various

The outline of his work is very graceful, and the arching admirable.
The Violin George Hart

He could not even bring himself to approach any nearer to that streaked and arching blank.
The Tree of Life Catherine Lucille Moore

And he saw that he had crawled under the cart and was trying to lift it by arching his back.
Master and Man Leo Tolstoy

a curved structure, normally in the vertical plane, that spans an opening
Also called archway. a structure in the form of an arch that serves as a gateway
something curved like an arch

any of various parts or structures of the body having a curved or archlike outline, such as the transverse portion of the aorta (arch of the aorta) or the raised bony vault formed by the tarsal and metatarsal bones (arch of the foot)
one of the basic patterns of the human fingerprint, formed by several curved ridges one above the other Compare loop1 (sense 10a), whorl (sense 3)

(transitive) to span (an opening) with an arch
to form or cause to form an arch or a curve resembling that of an arch: the cat arched its back
(transitive) to span or extend over: the bridge arched the flooded stream
(prenominal) chief; principal; leading: his arch rival
(prenominal) very experienced; expert: an arch criminal
knowing or superior
playfully or affectedly roguish or mischievous

c.1300, from Old French arche “arch of a bridge” (12c.), from Latin arcus “a bow” (see arc). Replaced native bow (n.1). Originally architectural in English; transferred by early 15c. to anything having this form (eyebrows, etc.).

1540s, “chief, principal,” from prefix arch-; used in 12c. archangel, etc., but extended to so many derogatory uses (arch-rogue, arch-knave, etc.) that by mid-17c. it acquired a meaning of “roguish, mischievous,” since softened to “saucy.” Also found in archwife (late 14c.), variously defined as “a wife of a superior order” or “a dominating woman, virago.”

early 14c., “to form an arch” (implied in arched); c.1400, “to furnish with an arch,” from arch (n.). Related: Arching.

arch (ärch)
An organ or structure having a curved or bowlike appearance, especially either of two arched sections of the bony structure of the foot.

In architecture, a curved or pointed opening that spans a doorway, window, or other space.

Note: The form of arch used in building often serves to distinguish styles of architecture from one another. For example, Romanesque architecture usually employs a round arch, and Gothic architecture, a pointed arch.

an architectural term found only in Ezek. 40:16, 21, 22, 26, 29. There is no absolute proof that the Israelites employed arches in their buildings. The arch was employed in the building of the pyramids of Egypt. The oldest existing arch is at Thebes, and bears the date B.C. 1350. There are also still found the remains of an arch, known as Robinson’s Arch, of the bridge connecting Zion and Moriah. (See TYROPOEON VALLEY.)


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