blow-by

[bloh-bahy]

blow-by

[bloh-bahy]
noun, plural blow-bies. Automotive.
1.
leakage of the air-fuel mixture or of combustion gases between a piston and the cylinder wall into the crankcase of an automobile.
2.
a device, fitted to a crankcase, for conducting such gases back to the cylinders for combustion.
Also, blow·by.


Origin:
1930–35; noun use of verb phrase blow by
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Blow-by is always a great word to know.
So is callithumpian. Does it mean:
the offspring of a zebra and a donkey.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
Collins
World English Dictionary
blow-by
 
n
the leakage of gas past the piston of an engine at maximum pressure

Collins English Dictionary - Complete & Unabridged 10th Edition
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