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• libra
  libra

  noun

  the ancient Roman pound (containing 5053 grains or 327.4 grams).
• Libra
  Libra

  noun

  the Balance, a zodiacal constellation between Virgo and Serpens.

libra

¹ American  

[lahy-bruh, lee-] / ˈlaɪ brə, ˈli- /

noun

librae plural

1. the ancient Roman pound (containing 5053 grains or 327.4 grams).

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libra ² American  

[lee-vrah] / ˈli vrɑ /

noun

libras plural

1. sol.

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Libra ³ American  

[lee-bruh, lahy-] / ˈli brə, ˈlaɪ- /

noun

1. Astronomy. the Balance, a zodiacal constellation between Virgo and Serpens.

2. Astrology.

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

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

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libra ¹ British  

/ ˈlaɪbrə /

noun

1. an ancient Roman unit of weight corresponding to 1 pound, but equal to about 12 ounces

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Libra ² British  

/ ˈliːbrə /

noun

1. astronomy a small faint zodiacal constellation in the S hemisphere, lying between Virgo and Scorpius on the ecliptic

2. astrology

   1. 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

   2. a person born under this sign

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adjective

1. astrology born under or characteristic of Libra

Libra Scientific  

/ lē′brə /

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

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Usage

What does Libra mean? Libra is the name of a constellation that is interpreted as representing a pair of scales. It is also known as the Scales or the Balance. A constellation is a group of stars that appear near each other in the sky—especially a group that has been given a name. Libra is considered one of the 12 zodiacal constellations—constellations that appear within a particular portion of the sky called the zodiac. In astronomy, the zodiac is the band of sky along which the paths of the sun, the moon, and the planets appear to move. Despite its basis in astronomy, the word zodiac is mainly associated with and most often used in the context of astrology, the nonscientific practice in which the positions of heavenly bodies at certain times are thought to influence or be correlated with human behavior and events. In astrology, zodiac refers to a diagram (often a circular one) representing the zodiac belt and showing the symbols associated with each of the 12 constellations or sections, which are called the signs of the zodiac. Libra is one of these signs. It is situated between Virgo and Scorpio and is considered the seventh sign of the zodiac. The other signs of the zodiac are Aries, Taurus, Gemini, Cancer, Leo, Sagittarius, Capricorn, Aquarius, and Pisces. The position of the sun in a particular portion of the zodiac at the moment of a person’s birth is thought to correlate with their personality. This is what people are referring to when they talk about their zodiac sign (or star sign or often just sign). People whose sign is Libra are those born between September 23 and October 22. The word Libra can be used as a noun to refer to someone who is born during this time, as in I was born in late October, so I’m a Libra. The word Libran can be used to mean the same thing. It can also be used as an adjective form of Libra. Example: Oh, your birthday is in October? Are you a Libra?

Etymology

Origin of libra¹

1350–1400; Middle English < Latin lībra

Origin of libra²

< Spanish < Latin lībra libra ¹

Origin of Libra³

1350–1400; Middle English < Latin lībra literally, pair of scales, libra ¹

Example Sentences

The signs attributed to each profile were Virgo, Leo, and Libra.

From Slate • May 5, 2026

Between March 3 and 5 four more vessels were struck: the Libra Trader, Gold Oak, Safeen Prestige and the Sonangol Namibe.

From Barron's • Mar. 8, 2026

Cyber security researchers at CrowdStrike formed the name "Scattered Spider" because of the group's sporadic nature, but other cyber companies have given the cluster nicknames including Octo Tempest and Muddled Libra.

From BBC • May 20, 2025

This study received support from the Libra Foundation and John Templeton Foundation.

From Science Daily • Dec. 5, 2024

Libra not only could help earth by providing clean solar energy, but could also relieve overcrowding on earth by giving people someplace else to live.

From "Flying to the Moon: An Astronaut's Story" by Michael Collins