The noun heart has 10 senses (first 6 from tagged texts)
1. (42) heart, bosom -- (the locus of feelings and intuitions; "in your heart you know it is true"; "her story would melt your bosom")
2. (25) heart, pump, ticker -- (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")
3. (9) heart, mettle, nerve, spunk -- (the courage to carry on; "he kept fighting on pure spunk"; "you haven't got the heart for baseball")
4. (5) center, centre, middle, heart, eye -- (an area that is approximately central within some larger region; "it is in the center of town"; "they ran forward into the heart of the struggle"; "they were in the eye of the storm")
5. (2) kernel, substance, core, center, essence, gist, heart, heart and soul, inwardness, marrow, meat, nub, pith, sum, nitty-gritty -- (the choicest or most essential or most vital part of some idea or experience; "the gist of the prosecutor's argument"; "the heart and soul of the Republican Party"; "the nub of the story")
6. (1) heart, spirit -- (an inclination or tendency of a certain kind; "he had a change of heart")
7. heart -- (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")
8. heart -- (a firm rather dry variety meat (usually beef or veal); "a five-pound beef heart will serve six")
9. affection, affectionateness, fondness, tenderness, heart, warmness, warmheartedness, philia -- (a positive feeling of liking; "he had trouble expressing the affection he felt"; "the child won everyone's heart"; "the warmness of his welcome made us feel right at home")
10. heart -- (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")