Available Definitions:
1) n. - The act of emitting a hiss or hisses.
2) n. - The occasion of contempt; the object of scorn and derision.
3) v. t. - To condemn or express contempt for by hissing.
4) v. t. - To utter with a hissing sound.
5) n. - A prolonged sound like that letter s, made by forcing out the breath between the tongue and teeth, esp. as a token of disapprobation or contempt.
6) n. - Any sound resembling that above described
7) n. - The noise made by a serpent.
8) n. - The note of a goose when irritated.
9) n. - The noise made by steam escaping through a narrow orifice, or by water falling on a hot stove.