intransitive verb
Definition: To make a sound like a long 's', often used to show disapproval or when steam escapes.
Example: The kettle began to hiss as the water boiled.
noun
Definition: A sharp sound made by forcing air through a narrow opening, often used to show disapproval or annoyance.
Example: The audience responded with a hiss when the actor forgot his lines.
transitive verb
Definition: To make a sharp, sibilant sound like a snake or to express disapproval by making this sound.
Example: The audience hissed at the actor's poor performance.