BARBICAN Meaning of BARBICAN in English [ 'bα:bɪk(ə)n ]■ noun the outer defence of a city or castle, especially a double tower above a gate or drawbridge.OriginME: from OFr. barbacane ; prob. based on Arab. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004