BAS-RELIEF Meaning of BAS-RELIEF in English [ 'basrɪˌli:f , 'bα:(s)- ]■ noun Art low relief.OriginC17 (as basse relieve ): from Ital. basso-rilievo 'low relief', later altered to the Fr. form. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004