1. also Her·a·cles or Her·a·kles (hĕrə-klēz′) Greek & Roman Mythology The son of Zeus and Alcmene, a hero of extraordinary strength who won immortality by performing 12 labors demanded by the Argive king Eurystheus.
2. A constellation in the Northern Hemisphere near Lyra and Corona Borealis.
[Latin, from Greek Hēraklēs : Hērā, Hera + kleos, fame; see kleu- in the Appendix of Indo-European roots.]
(click for a larger image)Hercules
detail of a c. 500 bc black-figure amphora showing Hercules killing the lion of Nemea
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