vent-hole

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Noun

vent-hole - a hole for the escape of gas or air

vent, venthole, blowhole

air duct, air passage, airway - a duct that provides ventilation (as in mines)

hole - an opening deliberately made in or through something

smoke hole - a vent (as in a roof) for smoke to escape

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The iron grating which served to close the oven, being raised at that moment, allowed only a view at the mouth of the flaming vent-hole in the dark wall, the lower extremity of its bars, like a row of black and pointed teeth, set flat apart; which made the furnace resemble one of those mouths of dragons which spout forth flames in ancient legends.

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Our arms became entangled in the effort of swimming; we choked; we fought in the dark water; already we could hardly breathe the dark air above the dark water, the air which escaped, which we could hear escaping through some vent-hole or other.

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"We think it's either a vent-hole light leak or a glinty rock." It's also possible that the flashes resulted from the impact of fast-moving cosmic rays with the camera, Maki said in a statement released by NASA.