PLINTH Meaning of PLINTH in English ■ noun1》 a heavy base supporting a statue or vase. 2》 Architecture the lower square slab at the base of a column.OriginC16: from L. ~us , from Gk ~os 'tile, brick, squared stone'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004