arch

noun, verb, adj — 15 senses

arch

noun

US /ɑɹt͡ʃ/ · UK /ɑːt͡ʃ/

Etymology From Middle English arch, arche, from Old French arche (“an arch”), a feminine form of arc, from Latin arcus (“a bow, arc, arch”). Doublet of arc and arco. Displaced native Old English bīeġels and Old English hwealf.

7 senses
  1. 1An inverted U shape.
  2. 2An arch-shaped arrangement of trapezoidal stones…
  3. 3An architectural element having the shape of an arch
  4. 4Any place covered by an arch; an archway.
  5. 5An arc; a part of a curve.
  6. 6A natural arch-shaped opening in a rock mass.
  7. 7The curved part of the bottom of a foot.
1

An inverted U shape.

2

An arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward.

3

Architecture An architectural element having the shape of an arch

4

Any place covered by an arch; an archway.

  • to pass into the arch of a bridge
5

Geometry, Mathematics, Sciences Archaic An arc; a part of a curve.

6

A natural arch-shaped opening in a rock mass.

7

Anatomy, Medicine, Sciences The curved part of the bottom of a foot.

Derived terms
91 termsabdominothoracic arch, antitwilight arch, aortic arch, aortic arch syndrome, arch bridge, arch dell, arch doxy, arched, arch enemy, Arches, archful, Archgrounds, arch harp, archivolt, archless, archlet, archlike, archlute, archmold, archmould, arch of the aorta, archtop, archway, archwire, archwise, archwork, balloon arch, bell arch, branchial arch, camber arch, counterarch, cycloidal arch, Dean of the Arches, dental arch, enarch, equilateral arch, fallen arch, first arch syndrome, flying arch, geostatic arch, gill arch, Golden Arches, Gothic arch, haemal arch, hemiarch, horseshoe arch, hyoid arch, hyoidean arch, interarch, jack arch, keel arch, keyhole arch, knife arch, lancet arch, Marble Arch, Maya arch, Mayan arch, midarch, Moorish arch, neural arch, nocturnal arch, oblique arch, overarch, palaeoarch, palatoglossal arch, palatopharyngeal arch, paleoarch, pectoral arch, pelvic arch, Persian arch, pharyngeal arch, proscenium arch, relieving arch, Royal Arch, safety arch, scheme arch, sea arch, semiarch, skew arch, smoke arch, stilted arch, straight arch, subarch, Syrian arch, tented arch, triumphal arch, Tudor arch, uparch, vertebral arch, wheel arch, zygomatic arch

arch

verb

Etymology From Middle English arch, arche, from Old French arche (“an arch”), a feminine form of arc, from Latin arcus (“a bow, arc, arch”). Doublet of arc and arco. Displaced native Old English bīeġels and Old English hwealf.

1

To form into an arch shape.

  • The cat arched its back.
  • GBR will either be letting operating contracts or running rail companies directly, depending on which party wins the next General Election. Whichever it is, you can be forgiven for arching an eyebrow at an infrastructure company being placed in overall control.2024 March 6, Philip Haigh, “Comment: Who will run our railways?”, in RAIL, number 1004, page 3:
2

To cover with an arch or arches.

arch

adj

Etymology From the prefix arch-. "Principal" is the original sense; "mischievous" is via onetime frequent collocation with rogue, knave, etc.

1

Knowing, clever, mischievous.

  • I attempted to hide my emotions, but an arch remark escaped my lips.
  • [He] spoke his request with so arch a leer.1710 July 14 (Gregorian calendar), Isaac Bickerstaff [et al., pseudonyms; Richard Steele et al.], “Monday, July 4, 1710”, in The Tatler, number 193; republished in [Richard Steele], editor, The Tatler, […], London stereotype edition, volume III, London: I. Walker and Co.; […], 1822, →OCLC:
4 more examples
  • I was every day furniſhing the Court with ſome ridiculous Story; and Glumdalclitch, although ſhe loved me to Exceſs, yet was arch enough to inform the Queen, whenever I committed any Folly that ſhe thought would be diverting to her Majeſty.1726 October 28, [Jonathan Swift], “Several Adventures that Happened to the Author. […]”, in Travels into Several Remote Nations of the World. […] [Gulliver’s Travels], volume I, London: […] Benj[amin] Motte, […], →OCLC, part II (A Voyage to Brobdingnag), page 247:
  • “Oh!” cried Mrs. Green, with an arch laugh, “you are acquainted with Monsieur Margot, then?”1828, [Edward Bulwer-Lytton], chapter XVI, in Pelham; or, The Adventures of a Gentleman. […], volume I, London: Henry Colburn, […], →OCLC, page 112:
  • Blanche’s grey eyes gazed at Foker with such an arch twinkle that both of them burst out laughing […]1848 November – 1850 December, William Makepeace Thackeray, chapter 46, in The History of Pendennis. […], volume (please specify |volume=I or II), London: Bradbury and Evans, […], published 1849–1850, →OCLC:
  • A certain melancholy that touched her countenance must have been of recent birth, for it had not yet altered the fine and youthful contours of her cheek, nor subdued the arch though resolute curve of her lips.1906 April, O. Henry [pseudonym; William Sydney Porter], “By Courier”, in The Four Million, New York, N.Y.: McClure, Phillips & Co, →OCLC:
2

Ireland Cute, sly, prematurely wise.

3

Principal; primary.

  • They were arch enemies.
  • the most arch act of piteous massacrec. 1593 (date written), William Shakespeare, “The Tragedy of Richard the Third: […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act IV, scene iii]:
1 more example
  • Challenger the super scientist, Challenger the arch-pioneer, Challenger the first man of all men whom Mother Earth had been compelled to recognize.1928 February 25 – March 3, Arthur Conan Doyle, “When the World Screamed”, in The Professor Challenger Stories […], London: John Murray, […], published [1952], →OCLC, page 577:
Derived terms
archly, archness

arch

noun

Etymology From the prefix arch-. "Principal" is the original sense; "mischievous" is via onetime frequent collocation with rogue, knave, etc.

1

Obsolete A chief.

  • My worthy arch and patron comes to-night.c. 1593 (date written), William Shakespeare, “The Tragedy of Richard the Third: […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act IV, scene iii]:
2

Video games Synonym of god (“person who owns and runs a multi-user dungeon”).

arch

noun

Etymology Clipping of architecture.

1

Business, Electrical engineering, Electricity, Electromagnetism, Electronics, Energy, Engineering, Natural sciences, Physical sciences, Physics An architecture; a computer architecture or instruction set architecture.

Operating systems

  • In the Linux kernel, arch-specific code lives in the arch directory of the source tree.
Related terms
arc

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.

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