blow-by

American  

[bloh-bahy] / ˈbloʊˌbaɪ /

Or blowby

noun

Automotive.

plural

blow-bies

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.

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blow-by British  

noun

1. the leakage of gas past the piston of an engine at maximum pressure

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Etymology

Origin of blow-by

First recorded in 1930–35; noun use of verb phrase blow by

Example Sentences

There were blow-by layups, floaters, a rare three-pointer and an old-fashioned three-point play on a jumper he threw up while getting fouled and falling down along the baseline.

From Los Angeles Times • Dec. 18, 2025

"It was really my blow-by speed," Young said.

From Fox News • Jun. 28, 2021

“It was really my blow-by speed,” Young said.

From Seattle Times • Jun. 28, 2021

He knows he has to keep learning and growing; he points, for instance, to his attempt at a game-winner in Philadelphia, when he followed a strong blow-by move with a weak up-and-under layup that was blocked.

From Washington Post • Oct. 8, 2016

The fine outing included power dunks, blow-by drives, pinpoint passes and a 3-pointer for good measure.

From Washington Times • Feb. 16, 2015