course, hearty, boisterous laughter, belly laugh

human laughter

lub-dub-lub-dub-lub-dub ...

Sound of a beating heart. This seems the most common spelling, used in medical texts. Also: dup-dup; ba bum; plop-plop; thud-thud; pop-pop; Sometimes the heart is said to throb and throb is also thought to have imitative origin. (Yahoo Answers, 1, 2)

human disease pounding pump heartbeat


(of the heart) to beat strongly



sound of a defibrillator (ref)

medical human electronic hit electric shock therapy heart attack

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