libra

noun pl. librae

1. Obsolete pound: the abbreviation for the unit of measure, lb., derives from this word and the symbol for the Brit. monetary unit, £, derives from its first letter
2. an ancient Roman unit of weight, equal to about 12 ounces
3. 1. a former gold coin of Peru
   2. a unit of weight in Spain, and various Latin American countries, equal to about one pound

noun

1. a S constellation between Virgo and Scorpius; the Scales; the Balance
2. the seventh sign of the zodiac, entered by the sun about September 23
   also called the Scales
3. a person born under this sign
   also Libran