a playing card in the major suit that has one or more red hearts on it; "he led the queen of hearts"; "hearts were trumps"
an inclination or tendency of a certain kind; "he had a change of heart"
the courage to carry on; "he kept fighting on pure spunk"; "you haven't got the heart for baseball"
the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body; "he stood still, his heart thumping wildly"
the locus of feelings and intuitions; "in your heart you know it is true"; "her story would melt your bosom"
a firm rather dry variety meat (usually beef or veal); "a five-pound beef heart will serve six"
a plane figure with rounded sides curving inward at the top and intersecting at the bottom; conventionally used on playing cards and valentines; "he drew a heart and called it a valentine"
a belief that can guide behavior; "the architect has a theory that more is less"; "they killed him on the theory that dead men tell no tales"
a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena; "theories can incorporate facts and laws and tested hypotheses"; "true in fact and theory"
a sweet flavored liquid (usually containing a small amount of alcohol) used in compounding medicines to be taken by mouth in order to mask an unpleasant taste
the act of imitating the behavior of some situation or some process by means of something suitably analogous (especially for the purpose of study or personnel training)
(computer science) the technique of representing the real world by a computer program; "a simulation should imitate the internal processes and not merely the results of the thing being simulated"