English
floorplate
From floor + plate.
Proto-Indo-European *pleh₂- ‘flat’
…
Proto-Germanic *flōraz ‘ground’
Proto-West Germanic *flōr
Old English flōr ‘floor’
Middle English floor
English floor
Proto-Indo-European *pleth₂- ‘flat’
…
Vulgar Latin *plattus ‘flat’
Medieval Latin plata
Old French plate ‘a flat metal disk’
Middle English plate
English plate
Today it means
noun A (usually metal) plate used as industrial flooring.
Language periods are conventional ranges, not dates for this word.
Etymograph / floorplate