| Answer | Crossword Clue |
|---|---|
| ALARUM | Warning sound, of old |
| ALARUM | Warning sound, old-style |
| SIREN | Sound of warning |
| HISS | Sound of warning |
| ahem | (an utterance similar to the sound of clearing one's throat, used to attract attention, express doubt or a mild warning, etc.) |
| rattlesnake | A heavy-bodied American pit viper with a series of horny rings on the tail that, when vibrated, produce a characteristic rattling sound as a warning |
| rattlesnakes | A heavy-bodied American pit viper with a series of horny rings on the tail that, when vibrated, produce a characteristic rattling sound as a warning |
