A distress signal is a type of signal used to indicate danger or a need for help. Common distress signals include the word 'FLARE' (5 letters), which is a type of pyrotechnic device used to attract attention, 'ACHE' (4 letters), which is a feeling of pain or discomfort, 'MAYDAY' (6 letters), which is an international distress call, 'ALARM' (5 letters), which is a warning device, 'YOWL' (4 letters), which is a loud, long cry, 'YELP' (4 letters), which is a short, sharp cry, 'AID' (3 letters), which is assistance or help, 'SOS' (3 letters), which is an internationally recognized distress signal, and 'NOTICE' (6 letters), which is a warning or announcement.