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warning signal
 
Noun warning signal has 1 sense
  1. alarm, alert, warning signal, alarum - an automatic signal (usually a sound) warning of danger
    --1 is a kind of signal, signaling, sign
    --1 has particulars:
     torpedo; air alert; burglar alarm; fire alarm; foghorn, fogsignal; horn; red flag; siren; tocsin, alarm bell
warning warning bell warning coloration warning device warning light warning of attack warning of war warning prenominal warning signal warningly warnings warningsa warnner warnning warns warp warp and weft

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