air-hole

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:
1760–70

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
air hole
 
n
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

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Air-hole is always a great word to know.
So is doohickey. Does it mean:
a gadget; dingus; thingumbob.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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