Definition of outstroke in US English:

outstroke

noun

  • A stroke directed outwards; specifically the stroke of an engine which carries the piston towards the crankshaft and further out of the cylinder.

Origin

Late 17th century; earliest use found in Randle Holme (1627–1700), herald painter. From out- + stroke, after to strike out.

Pronunciation

outstroke

/ˈaʊtˌstrəʊk/