👉 A term in Greek mythology, "hylasmus" refers to a type of snake that is both venomous and poisonous. It was a symbol of the power that snakes hold over humans when they are provoked. In the story of Pygmalion from Homer's Odyssey, Achilles was bitten by this venomous snake and became possessed by its spirit, causing him to become impotent. This mythological creature has been associated with fear, danger, and the supernatural since ancient times.