Libra

UK: 'Libra': /ˈliːbrə/; 'libra': /ˈlaɪbrə/

US: 'Libra': (lē′brə, lī′-); 'libra': (lī′brə, lē′-; Currency lē′vrä)

Collins Concise English Dictionary © HarperCollins Publishers::

Libra / ˈliːbrə/ noun ( Librae / ˈliːbriː/)

1. a small faint zodiacal constellation in the S hemisphere, lying between Virgo and Scorpius on the ecliptic
2. 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

WordReference Random House Learner's Dictionary of American English © 2025

-libra-,  root. 

1. Astronomy -libra- comes from Latin, where it has the meaning "balance;
   weigh.'' This meaning is found in such words as: deliberate, equilibrium.

WordReference Random House Unabridged Dictionary of American English © 2025

li•bra¹  (lī′brə, lē′-), n., pl. -brae (-brē, -brī). 

1. Weights and Measures, Antiquity the ancient Roman pound (containing 5053 grains or 327.4 grams).

• Latin lībra
• Middle English 1350–1400

li•bra²  (lē′vrä), n., pl. -bras 

(-vräs). 
1. Currency sol³ (def. 2).

• Latin lībra libra¹
• Spanish

Li•bra  (lē′brə, lī′-), n., [gen.] -brae (-brī, -brē) 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. See illus. under zodiac. 
   • Also, Li′bran. a person born under this sign, usually between September 23rd and October 22nd.

• Latin lībra literally, pair of scales, libra¹
• Middle English 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::

libra / ˈlaɪbrə/ noun ( -brae / -briː/)

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

Etymology: 14th Century: from Latin, literally: scales