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arch - definition and synonyms

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noun [countable]     arch pronunciation in American English
Word Forms
  1. 1
    a curved structure at the top of a door, window, or gate

    the arch above the front door

    1. a.
      a structure with a curved top and two straight sides that you can walk through

      a garden arch

    2. b.
      a curved structure, especially one that supports a building or a bridge

      Many people sheltered under the arches of the bridge.

      the St. Louis Arch

  2. 2
    the curved part on the bottom of your foot


a lifestyle focussing on simple pleasures such as comfort and cosiness in the home, and spending time with friends and family

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a form of location that involves the underwater detonation of a bomb which causes sound waves that are picked up by ships

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