Get an English Tutor
English word plein comes from Proto-Indo-European *pl̥-, Middle English full, Proto-Indo-European *pl(e)Hk-, Proto-Indo-European - -nós, Proto-Indo-European *pelh, Italian plain, and later Latin planus (Level, flat, even.)
*pl̥- (Proto-Indo-European)
full (Middle English)
*pl(e)Hk- (Proto-Indo-European)
- -nós (Proto-Indo-European)
*pelh (Proto-Indo-European)
plain (Italian)
full (English)
(archaic) Quite; thoroughly; completely; exactly; entirely. (transitive) To baptise. (of the moon) To become full or wholly illuminated. (AU) Drunk, intoxicated. (informal) Having eaten to satisfaction, having a "full" stomach; replete.. (obsolete) Having the mind filled with ideas; stocked with knowledge; stored with information.. (obsolete) Impregnated; made pregnant.. (poker, postnominal) [...]
planus (Latin)
Level, flat, even.
*pl̥h₁nós (Proto-Indo-European)
Full.
*plēnos (Proto-Italic)
Full.
plenus (Latin)
(with genitive, or ablative in later Latin) full (of), filled, plump. Satisfied.
plein (Old French)
Full (at capacity with respect to space).
plein (English)