stop up

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English

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Verb

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stop up (third-person singular simple present stops up, present participle stopping up, simple past and past participle stopped up)

  1. To fill a hole or cavity, or block (an opening or passage), as with a plug.
    Coordinate terms: plug up, stop off
    • 1885, Mark Twain, chapter 37, in Huckleberry Finn:
      So then we [] scratched around and found an old tin washpan, and stopped up the holes as well as we could.
  2. (UK, law) To permanently close or block (a road or path); to legally extinguish a right of way.
    Coordinate terms: block off, close off
  3. (photography) To increase the aperture of a photographic lens, moving from an f/stop represented by a higher number to an f/stop represented by a lower number and causing more light to pass into the camera.
    • 2002, Kathleen Tracy, The Complete Idiot's Guide to Portrait Photography, →ISBN, page 18:
      To stop down means to narrow the aperture; to stop up or open up means to expand it.

Antonyms

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  • (antonym(s) of increase the aperture of a photographic lens): stop down

Translations

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Anagrams

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