from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A unit of weight in ancient Rome equivalent to about 12 ounces.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A Roman unit of weight equal to about 327 grams.
- n. Any of various units of weight in Spanish- and Portuguese-speaking countries approximately equal to 460 grams or a little more than a US or UK pound.
- n. Alternative spelling of libbra, an Italian unit of weight.
Middle English, from Latin lībra.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin libra. (Wiktionary)