Definitions
from The Century Dictionary.
- noun A device for admitting air to a vessel when liquid is to be drawn out, or for allowing gases to escape.
Etymologies
Sorry, no etymologies found.
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Examples
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Thus it is developed by blowing air over glass, and the hydro-electric machine, one of the most effective means of generating electricity we possess, owes its surprising energy to the friction of globules of water against the sides of the vent-cock of a steam-boiler.
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[*] This machine consists simply of a small steam-boiler insulated on glass pillars, having a peculiarly-constructed vent-cock and provided with suitable metallic conductors for receiving the electricity.
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