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Stop up
verb
Definitions
Verb
- 1 To fill a hole or cavity, or block (an opening or passage), as with a plug.
"So then we […] scratched around and found an old tin washpan, and stopped up the holes as well as we could."
- 2 fill or close tightly with or as if with a plug wordnet
- 3 To permanently close or block (a road or path); to legally extinguish a right of way. UK
- 4 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.
"To stop down means to narrow the aperture; to stop up or open up means to expand it."
See also for "stop up"
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Unscramble this word: stopup