English
enplane
From en- + plane.
Proto-Indo-European *pleh₂- ‘flat’
Proto-Indo-European *pl̥h₂nós
Proto-Italic *plānos
Latin plānus ‘plain’
Latin plānum ‘flat surface’
English plane
Today it means
verb To board an airplane.
Language periods are conventional ranges, not dates for this word.
Etymograph / enplane