to make the characteristic cry of an owl
to sound the horn, whistle, etc of a motor car or other vehicle, esp as a warning
The driver hooted at me as he passed
to utter a loud derisive shout
informal to laugh loudly
to jeer (an actor, speaker, etc)
(+ down/off) to shout down (a speaker) or jeer (an actor, performer, etc) off the stage
to express (one's disapproval, etc) by hooting
to say (something) in a hearty carrying voice
[Middle English houten, of imitative origin]