[ lahy-bruh, lee- ]

noun,plural li·brae [lahy-bree, lee-brahy]. /ˈlaɪ bri, ˈli braɪ/.
  1. the ancient Roman pound (containing 5053 grains or 327.4 grams).

Origin of libra

1350–1400; Middle English <Latin lībra

Other definitions for libra (2 of 3)

[ lee-vrah ]

noun,plural li·bras [lee-vrahs]. /ˈli vrɑs/.

Origin of libra

<Spanish <Latin lībralibra1

Other definitions for Libra (3 of 3)

[ lee-bruh, lahy- ]

noun,genitive Li·brae [lee-brahy, lahy-bree] /ˈli braɪ, ˈlaɪ bri/ for 1.
  1. Astronomy. the Balance, a zodiacal constellation between Virgo and Serpens.

  2. Astrology.

    • the seventh sign of the zodiac: the cardinal air sign.

    • Also Libran. a person born under this sign, usually between September 23rd and October 22nd.

Origin of Libra

1350–1400; Middle English <Latin lībra literally, pair of scales, libra1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use libra in a sentence

British Dictionary definitions for libra (1 of 2)


/ (ˈlaɪbrə) /

nounplural -brae (-briː)
  1. an ancient Roman unit of weight corresponding to 1 pound, but equal to about 12 ounces

Origin of libra

C14: from Latin, literally: scales

British Dictionary definitions for Libra (2 of 2)


/ (ˈliːbrə) /

nounLatin genitive Librae (ˈliːbriː)
  1. astronomy a small faint zodiacal constellation in the S hemisphere, lying between Virgo and Scorpius on the ecliptic

  2. astrology

    • Also called: the Scales, the Balance the seventh sign of the zodiac, symbol ♎, having a cardinal air classification and ruled by the planet Venus. The sun is in this sign between about Sept 23 and Oct 22

    • a person born under this sign

  1. astrology born under or characteristic of Libra

  • Also (for senses 2b, 3): Libran (ˈlɪbrən)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for Libra


[ brə ]

  1. A constellation in the Southern Hemisphere near Scorpius and Virgo. Libra (the Scales or Balance) is the seventh sign of the zodiac.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.