| Answer | Crossword Clue |
|---|---|
| ALARUM | Warning signal for Macbeth |
| ALERT | Warning signal |
| KLAXON | Warning signal |
| HORN | Warning signal |
| BEEP | Warning signal |
| TOCSIN | Warning signal. |
| ALARM | Warning signal. |
| TOCSIN | Warning signal |
| SIREN | Warning signal |
| ALARM | Warning signal |
| ALARMBELL | Warning signal |
| FLARE | Warning signal |
| AMBERLIGHT | Driver's warning signal |
| YELLOWLIGHT | Driver's warning signal |
| BLIP | Radar warning signal. |
| FUSEE | Railway warning signal |
| FOGHORN | Ship's warning signal |
| ALARUM | Warning signal, once |
| KLAXON | Loud warning signal |
| HIGHSIGN | Silent warning signal |
| SIRENED | Sounded a warning signal |
| WHISTLESTOPS | Warning signal conks out |
| ALARUM | Warning signal of old |
| BURGLARALARM | Warning signal of a sort |
