1. A constellation in the Southern Hemisphere near Scorpius and Virgo. Also called Balance, Scales.
a. The seventh sign of the zodiac in astrology. Also called Balance, Scales.
b. pl. Li·bras One who is born under this sign.
[Middle English, from Latin Lībra, from lībra, balance, the constellation Libra.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.