A passage supplying ventilation into a mine tunnel or other underground facility.
A vertical (or near vertical) opening (shaft) running from a courtyard to the sky, thus allowing air to circulate to high-rise apartments or offices.
A device used for handling winding reels in the processing of web-fed materials, such as in continuous-process printing presses.
A ventilating chimney over the shaft of a mine.
A chimney; also, the top part of a chimney.
A deep pool, especially one in a riverbed.
A grove or wood; also, a woody valley.