Save Type Surname (from nickname & from location) Usage English Pronounced Pron. /ˈplæt/ [key·simplify] Meaning & History From Old French plat meaning "flat, thin", from Late Latin plattus, from Greek πλατύς (platys) meaning "wide, broad, flat". This may have been a nickname or a topographic name for someone who lived near a flat feature. Related Names Rootplatys Categories landforms, sizes, voice actors