home Elo Vazquez heart [hahrt] –noun 1. Anatomy. a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary artery to the lungs for oxygenation, a left atrium that receives the oxygenated blood via the pulmonary veins and passes it through the mitral valve, and a left ventricle that pumps the oxygenated blood, via the aorta, throughout the body. 2. the center of the total personality, esp. with reference to intuition, feeling, or emotion: In your heart you know I'm an honest man. 3. the center of emotion, esp. as contrasted to the head as the center of the intellect: His head told him not to fall in love, but his heart had the final say. 4. a conventional shape with rounded sides meeting in a point at the bottom and curving inward to a cusp at the top. h a b c d e f g h i j k l m n o p q r s t u v w x y z hair hand half heart hang hang-time heaven herculean helicopter hickey hide-and-seek hig-hz hair-dryer