Libra

Noun

1. A Roman unit of mass, usually equivalent to 327 g.
2. A traditional Spanish unit of mass, usually around 460 g.
3. A traditional Portuguese unit of mass, usually equivalent to 345 g and particularly used for trade in medicines.
4. Synonym of arratel, a separate Portuguese unit of mass, usually around 460 g.
5. Alternative spelling of libbra, a traditional Italian unit of mass.