To permanently close or block (a road or path); to legally extinguish a right of way.
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 fill a hole or cavity, or block (an opening or passage), as with a plug.
To draw out the stops of (an organ).
To remove a stoppage; to clear a blockage.
To unplug or uncork a container.