English
instroke
From in + stroke.
Proto-Indo-European *h₁én ‘in’
Proto-Germanic *in
Proto-West Germanic *in
Old English in
Middle English in ‘inside’
English in
Proto-Indo-European *streyg- ‘to rub, stroke’
Proto-Germanic *straikaz
Proto-West Germanic *straik ‘stroke, line, dash’
Old English strāc
Middle English strok ‘blow from a weapon, cut’
English stroke
Today it means
noun An inward stroke; specifically, in a steam engine or other engine, a stroke in which the piston is moving away from the crankshaft.
Language periods are conventional ranges, not dates for this word.
Etymograph / instroke