Webster's Revised Unabridged Dictionary · 1913

Hercules

Hercules , noun

1.
(Greek Mythology) A hero, fabled to have been the son of Jupiter and Alcmena, and celebrated for great strength, esp. for the accomplishment of his twelve great tasks or “labors.”
2.
(Astronomy) A constellation in the northern hemisphere, near Lyra.
Collocations (2)
Hercules' beetle (Zoology) , any species of Dynastes, an American genus of very large lamellicorn beetles, esp. Dynastes hercules of South America, which grows to a length of six inches.
Hercules powder , an explosive containing nitroglycerin; -- used for blasting.