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Anatomy The chambered muscular organ in vertebrates that pumps blood received from the veins into the arteries, thereby maintaining the flow of blood through the entire circulatory system.
(noun)
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Anatomy A similarly functioning structure in invertebrates.
(noun)
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The area that is the approximate location of the heart in the body; the breast.
(noun)
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The vital center and source of one's being, emotions, and sensibilities.
(noun)
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The repository of one's deepest and sincerest feelings and beliefs: an appeal from the heart; a subject dear to her heart.
(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.