/lee"oh/ , n., gen. Leonis /lee oh"nis/ for 1.
1. Astron. the Lion, a zodiacal constellation between Virgo and Cancer, containing the bright star Regulus.
2. Astrol.
a. the fifth sign of the zodiac: the fixed fire sign. See illus. under zodiac .
b. a person born under this sign, usually between July 23rd and August 22nd.
3. a male given name: from a Greek word meaning "lion."