LIBRA Meaning of LIBRA in English [ 'lʌɪbrə ]■ noun ( plural ~e 'lʌɪbri: ) (in ancient Rome) a unit of weight equivalent to 12 ounces (0.34 kg), the forerunner of the pound.OriginL., 'pound, balance'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004