hooter
/ˈhuːtər/
noun
- A person or thing that hoots, such as an owl or a horn.
- The train's hooter sounded as it approached the crossing.
- The comedian was a real hooter, making everyone laugh.
- The old hooter in the barn woke us up every night.
- A whistle or siren, especially on a factory or vehicle (British English).
- The fire truck's hooter blared as it sped down the street.
- The factory hooter signaled the end of the shift.
- He blew the hooter to announce the start of the race.