Serpent

1. The constellation Serpens.
2. To wind like a serpent; to crook about; to meander.
3. Fig.: A subtle, treacherous, malicious person.
4. To wind; to encircle.
5. A species of firework having a serpentine motion as it passess through the air or along the ground.
6. Any reptile of the order Ophidia; a snake, especially a large snake. See Illust. under Ophidia.
7. A bass wind instrument, of a loud and coarse tone, formerly much used in military bands, and sometimes introduced into the orchestra; -- so called from its form.