English
lightplane
From light + plane.
Proto-Indo-European *lewk- ‘to shine’
…
Proto-Germanic *leuhtą
Proto-West Germanic *leuht ‘light’
Old English lēoht
Middle English light ‘light, illumination’
English light
Proto-Indo-European *pleh₂- ‘flat’
Proto-Indo-European *pl̥h₂nós
Proto-Italic *plānos
Latin plānus ‘plain’
Latin plānum ‘flat surface’
English plane
Today it means
noun A small, lightweight aeroplane.
Language periods are conventional ranges, not dates for this word.
Etymograph / lightplane