blow-by

== English == === Noun === blow-by (countable and uncountable, plural blow-bys) (automotive) In an internal combustion engine, any burnt or unburnt matter escaping from the cylinder, past the (worn) rings on the piston, and into the crankcase. === See also === blow-by-blow by-blow === Anagrams === Bowlby, Wobbly, by-blow, byblow, wobbly