English noun: warning signal | |||
1. | warning signal (communication) an automatic signal (usually a sound) warning of danger | ||
Synonyms | alarm, alarum, alert | ||
Broader (hypernym) | sign, signal, signaling | ||
Narrower (hyponym) | air alert, alarm bell, burglar alarm, fire alarm, foghorn, fogsignal, horn, red flag, siren, tocsin, torpedo | ||