September is Etymology Month (28)

ПЛОЩАДЬ [plóščad'] 'square'. OR 'square, street', from ChSl., based on Gk. plateia (hodós 'way' understood) 'street', lit. 'flat, broad way', alternatively from *ploskědь, cf. плоский 'flat', with -sk- palatalising to -šč- before -ě-, thus 'flat area'.