blow-by

blow-by

n

(Automotive Engineering) the leakage of gas past the piston of an engine at maximum pressure

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

blow′-by`

n., pl. -bys.

leakage of combustion gases between a piston and the cylinder wall into the crankcase of an automobile.

[1930–35]

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