An ancient Roman unit of weight equal to 327.45 grams b [Spanish and Portuguese, from Latin]; any of various Spanish, Portuguese, Colombian, or Venezuelan units of weight.

1. A small faint zodiacal constellation in the southern hemisphere; between Virgo and Scorpius.
2. The seventh sign of the zodiac; the sun is in this sign from September 23 to October 22; Also called: Libra the Balance, Libra the Scales.
Faint zodiacal constellation in the southern hemisphere adjoining Scorpius, and represented as the scales of justice. The Sun passes through Libra during Nov. The constellation was once considered to be a part of Scorpius, seen as the scorpion's claws. In astrology, the dates for Libra are between about 23 Sept and 23 Oct (see precession).

Novel 1988 by US writer Don DeLillo. Using a complex structure, it tells the story of the assassination of President John F Kennedy seen through the life of Lee Harvey Oswald, and deals with the wider plots and conspiracies of the event. The novel is a bold treatment of a vital event in American modern history.