Definitionen
1.NounA snake.
2.NounA subtle, treacherous, malicious person.
3.NounAn obsolete wind instrument in the brass family, whose shape is suggestive of a snake (Wikipedia article).
4.NounA kind of firework with a serpentine motion.
5.NounA snake-like monster, such as a dragon or sea serpent.
6.VerbTo wind or meander
7.VerbTo encircle.