stop up
In real, traceable use. Part of the curated seed collection; community review is coming.
Sense 1
To fill a hole or cavity, or block (an opening or passage), as with a plug.
Examples
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 2
To permanently close or block (a road or path); to legally extinguish a right of way.
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Sense 3
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.
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “stop up” mean?
To fill a hole or cavity, or block (an opening or passage), as with a plug.
Is “stop up” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.