n.1. Zoology A snake.
2. often Serpent In the Bible, the creature that tempted Eve, identified in Christian tradition with Satan.
3. A subtle, sly, or treacherous person.
4. A firework that writhes while burning.
5. Music A deep-voiced wind instrument of serpentine shape, used principally from the 1600s to the 1800s, about 2.5 meters (8 feet) in length and made of brass or wood.
6. Serpent Serpens.