Where does “plass” come from?

plass (Norwegian Nynorsk) comes from Old Norse plaz, from Middle Low German platse, from Latin platēa, from Ancient Greek πλατεῖα, from Ancient Greek πλατύς, from Proto-Indo-European pléth₂us, from Proto-Indo-European pleth₂- — flat.

plass (Norwegian Nynorsk): room, space; a place