If someone in a plane or ship sends out a Mayday or a Mayday message, they send out a radio message calling for help because they are in serious difficulty. He raced to pick up the lifejackets while his stepmother sent out a Mayday call. a radio signal used to ask for help when a ship or plane is in serious danger SOS (m'aider )
mayday (telsizle yapılan uluslararası imdat çağrısı)