hooter

Short definition from Wiktionary

Noun

1. 1
   A person who hoots.
2. 2
   The horn in a motor vehicle.
3. 3
   A siren or steam whistle, especially one in a factory and used to indicate the beginning or the end of a working day or shift.
4. 4
   A nose, especially a large one.
5. 5
   An owl.
6. 6
   A woman's breast.
7. 7
   A penis.
8. 8
   A large cannabis cigarette.
9. 9
   The tiniest amount; a whit or jot.