The Collaborative International Dictionary
blowby \blow"by`\, blow-by \blow"-by`\(bl[=o]"b[imac]`), n. the leakage of gases from the combustion cylinder of an internal combustion engine between the piston and cylinder wall into the crankcase.
n. (alternative spelling of blow-by English)
Usage examples of "blowby".
The power to destroy the laird of Dalkeith with one blowby taking his cherished wife away from him.