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air hole

noun
1.
an opening to admit or discharge air.
2.
a natural opening in the frozen surface of a river or pond.
Origin
1760-1770
1760-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for air hole
  • The top of each observation well shall be provided with a cap in which an air hole has been drilled.
  • Prior to discarding your used oil filter, punch an air hole in the dome end of the filter.
  • The officials ordered the rescuers to dig from the air hole on top of the mountain.
  • The flight end cap had a rubber gasket with a marginal air hole to allow pressurization behind the piston.
  • The cup is available with an air hole or rubber button for controlled feeding.
British Dictionary definitions for air hole

air hole

noun
1.
a hole that allows the passage of air, esp for ventilation
2.
a section of open water in a frozen surface
3.
a less common name for air pocket (sense 1)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Value for air

3
3
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