遭そう難なん信しん号ごうMeaningsNoun1. distress signal; SOSKanji used遭encounter a difficulty難difficult信belief号ID numberPitch accentそうなんしんごうComposed of遭そう難なん(meeting with) disaster; (having an) accident; mishap; shipwreck; distressNoun信しん号ごうsignal; signalling; signaling; traffic light; traffic signalNounExamples1船せん長ちょうは無む線せん通つう信しん士しに遭そう難なん信しん号ごうを打うつように命めい令れいした。The ship's captain ordered the radio operator to send a distress signal.