(n.) A rapid pulsation; a throbbing; esp., an abnormal, rapid beating of the heart as when excited by violent exertion, strong emotion, or by disease.

agitation angina angina pectoris aortic insufficiency aortic stenosis apoplectic stroke apoplexy arrhythmia arteriosclerosis atherosclerosis atrial fibrillation auricular fibrillation barrage beat beating beriberi heart cardiac arrest cardiac insufficiency cardiac shock cardiac stenosis cardiac thrombosis carditis chills of fear cold creeps cold shivers cold sweat congenital heart disease cor biloculare cor juvenum cor triatriatum coronary coronary insufficiency coronary thrombosis creeps dance diastolic hypertension didder disquiet disquietude dithers drum drum music drumbeat drumfire drumming encased heart endocarditis extrasystole fatty heart fear and trembling fibroid heart fidgetiness fidgets flap flask-shaped heart flicker flit flitter flop flutter frosted heart goose bumps gooseflesh hairy heart heart attack heart block heart condition heart disease heart failure heartbeat heartquake heartthrob heaving high blood pressure horripilation hypertension hypertensive heart disease inquietude ischemic heart disease jimjams mitral insufficiency mitral stenosis myocardial infarction myocardial insufficiency myocarditis myovascular insufficiency nervousness ox heart panting paradiddle paralytic stroke paroxysmal tachycardia patter pericarditis perturbation pile pitapat pitter-patter pound pounding premature beat pseudoaortic insufficiency pulmonary insufficiency pulmonary stenosis pulsation pulse quaking quaver quavering quiver quiver of terror quivering rat-a-tat rat-tat rat-tat-tat rataplan rattattoo restlessness rheumatic heart disease rhythm roll round heart rub-a-dub ruff ruffle sclerosis shake shakes shaking shiver shivers shudder spatter splutter sputter staccato stony heart stroke sweat tachycardia tat-tat tattoo tempo thrill of fear throb throbbing thrombosis thrum thumping tom-tom tremble trembling tremor trepidation trepidity tricuspid insufficiency tricuspid stenosis turtle heart twitter uneasiness unrest varicose veins varix ventricular fibrillation waver