TERREPLEIN Meaning of TERREPLEIN in English [ 'tɛ:pleɪn ]■ noun chiefly historical a level space where a battery of guns is mounted.OriginC16: from Fr. terre-plein , from Ital. terrapieno 'filled with earth'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004