Any species of the suborder Serpentes; a snake or serpent.
Of or pertaining to the suborder Serpentes; of, related to, or characteristic of a snake or serpent.
A snake, especially a large or dangerous one.
An obsolete wind instrument in the brass family, whose shape is suggestive of a snake (Wikipedia article).
A kind of firework with a serpentine motion.
A subtle, treacherous, malicious person.