chimney cap [′chim·nē ‚kap]
(architecture)
A cornice forming the uppermost portion of a chimney.
(civil engineering)
A rotary device fitted to a chimney and moved by the wind so that the chimney is turned away from the wind to permit the escape of smoke while rain or snow is prevented from entering the chimney.
chimney cap, bonnet
chimney cap with corbel, 1
chimney cap, 1
1.An abacus or cornice forming a crowning termination of a chimney.
2. A rotary device, moved by the wind, which facilitates the escape of smoke by turning the exit aperture away from the wind, preventing the entry of rain or snow and improving the draft.
3. A chimney hood.
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