n. 25B6; noun
his heart stopped beating : informal ticker. See list.
he poured out his heart : EMOTIONS, feelings, sentiments; soul, mind, bosom, breast; love, affection, passion.
he has no heart : COMPASSION, sympathy, humanity, feeling(s), fellow feeling, brotherly love, tenderness, empathy, understanding; kindness, goodwill.
they may lose heart : ENTHUSIASM, keenness, eagerness, spirit, determination, resolve, purpose, courage, nerve, will power, fortitude; informal guts, spunk; Brit. informal bottle.
the heart of the city : CENTRE, middle, hub, core, nucleus, eye, bosom.
the heart of the matter : ESSENCE, crux, core, nub, root, gist, meat, marrow, pith, substance, kernel; informal nitty-gritty.
cardiac, coronary.
edge.
25A0; after one's own heart LIKE-MINDED, of the same mind, kindred, compatible, congenial, sharing one's tastes, on the same wavelength.
25A0; at heart DEEP DOWN, basically, fundamentally, essentially, in essence, intrinsically; really, actually, truly, in fact; informal when you get right down to it.
25A0; (off) by heart FROM MEMORY, off pat, by rote, word for word, verbatim, parrot-fashion, word-perfect.
25A0; do one's heart good CHEER (UP), please, gladden, make one happy, delight, hearten, gratify, make one feel good, give one a lift; informal give someone a buzz, tickle someone pink, buck up.
25A0; eat one's heart out PINE, long, ache, brood, mope, fret, sigh, sorrow, yearn, agonize; grieve, mourn, lament.
25A0; from the (bottom of one's) heart SINCERELY, earnestly, fervently, passionately, truly, genuinely, heartily, with all sincerity.
25A0; give/lose one's heart to FALL IN LOVE WITH, be smitten by; informal fall for, fall head over heels for, be swept off one's feet by, develop a crush on.
25A0; have a change of heart CHANGE ONE'S MIND, change one's tune, have second thoughts, have a rethink, think again, think twice; informal get cold feet.
25A0; have a heart BE COMPASSIONATE, be kind, be merciful, be lenient, be sympathetic, be considerate, have mercy.
25A0; heart and soul WHOLEHEARTEDLY, enthusiastically, eagerly, zealously; absolutely, completely, entirely, fully, utterly, to the hilt, one hundred per cent.
25A0; take heart BE ENCOURAGED, be heartened, be comforted; cheer up, brighten up, perk up, liven up, revive; informal buck up.
25A0; with one's heart in one's mouth IN ALARM, in fear, fearfully, apprehensively, on edge, with trepidation, in suspense, in a cold sweat, with bated breath, on tenterhooks; informal with butterflies in one's stomach, in a state, in a stew, in a sweat; Brit. informal having kittens; N. Amer. informal in a twit.
Parts of the Heart
aortic valve semilunar valve
atrium sino-atrial node
epicardium tricuspid valve
mitral valve upper chamber
myocardium vena cava
pericardium ventricle
pulmonary artery ventricular septum
pulmonary vein