警告音 けいこくおん Meanings Noun warning sound Kanji 警 warn. Read as ケイ. 告 tell. Read as コク. 音 sound. Read as オン. Common phrases 警告音が鳴る Words containing 警告音 速度警告音 (そくどけいこくおん) speed warning sound (esp. ones formerly fitted to Japanese automobiles) Jinuma: Japanese Dictionary · Word lists