a mythical Greek hero of the Iliad; a foremost Greek warrior at the siege of Troy; when he was a baby his mother tried to make him immortal by bathing him in a magical river but the heel by which she held him remained vulnerable--his `Achilles' heel'
A mythical semidivine hero, the son of Peleus by the nereid Thetis, and prince of the Myrmidons, who features in the Iliad as a central character and the foremost warrior of the Achaean (Greek) camp.
The name Achilles was borrowed into Latin from Ancient Greek. It originally referred to the famous hero of Greek mythology.