distress signal

Noun
  1. An internationally recognized signal sent out by a ship or plane indicating that help is needed (synset 106816494)
    is a type of: sign, signal, signaling - any nonverbal action or gesture that encodes a message
    subtypes:
    • sos - an internationally recognized distress signal in radio code
    • mayday - an internationally recognized distress signal via radiotelephone (from the French m'aider)
    same as: distress call

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