Meaning

noun large gregarious predatory feline of Africa and India having a tawny coat with a shaggy mane in the male

noun a celebrity who is lionized (much sought after)

noun (astrology) a person who is born while the sun is in Leo

originFrom Middle English lyoun, lion, leon, borrowed from Old French lion, from Latin leō, (accusative: leōnem), from Ancient Greek λέων (léōn), of unclear origin. Doublet of Leo, leu, lev, and Lyon. Displaced Old English lēo, from the same Latin source.

Etymology from Wiktionary, CC BY-SA 3.0