音おん波ぱ水すい中ちゅう探たん知ち機きMeaningsNoun1. sonarKanji used音sound波a wave水water中in探to feel around for知know機machineComposed of音おん波ぱsound wave; acoustic waveNoun水すい中ちゅうunderwaterNoun探たん知ち機きdetector; locatorNoun