police whistle
103 synonyms found
- aid to navigation
- air-raid alarm
- alarm
- alarm bell
- alarm clock
- alarm signal
- alarum
- alert
- all clear
- amber light
- balefire
- beacon
- beacon fire
- bell
- bell buoy
- blinker
- blinking light
- blue peter
- buoy
- burglar alarm
- buzzer
- caution light
- crostarie
- fiery cross
- fire alarm
- fire bell
- fire flag
- five-minute gun
- flashing light
- fog bell
- fog signal
- fog whistle
- foghorn
- gale warning
- glance
- go light
- gong buoy
- green light
- heliograph
- high sign
- horn
- hue and cry
- hurricane warning
- international alphabet flag
- international numeral pennant
- kick
- Klaxon
- leer
- lighthouse
- marker beacon
- Mayday
- nod
- note of alarm
- nudge
- occulting light
- parachute flare
- pilot flag
- quarantine flag
- radio beacon
- red flag
- red light
- rocket
- Roman candle
- sailing aid
- semaphore
- semaphore flag
- semaphore telegraph
- signal beacon
- signal bell
- signal fire
- signal flag
- signal gong
- signal gun
- signal lamp
- signal light
- signal mast
- signal of distress
- signal post
- signal rocket
- signal shot
- signal siren
- signal tower
- siren
- small-craft warning
- SOS
- spar buoy
- still alarm
- stop light
- storm cone
- storm flag
- storm warning
- the nod
- the wink
- tocsin
- two-minute gun
- upside-down flag
- watch fire
- whistle
- white flag
- wigwag
- wigwag flag
- wink
- yellow flag