libraPronunciation: /ˈlʌɪbrə/Definition of libra noun (plural librae /ˈlʌɪbriː/) (in ancient Rome) a unit of weight, equivalent to 12 ounces (0.34 kg). It was the forerunner of the pound. Origin:Latin, 'pound, balance'libra in other Oxford dictionaries Definition of libra in the US English dictionary
