1

heart

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noun \ˈhärt\

Definition of heart

  1. 1a :  a hollow muscular organ of vertebrate animals that by its rhythmic contraction acts as a force pump maintaining the circulation of the blood <could feel her heart pounding>b :  a structure in an invertebrate animal functionally analogous to the vertebrate heartc :  breast, bosom <placed his hand on his heart>d :  something resembling a heart in shape; specifically :  a stylized representation of a heart <a card decorated with hearts and flowers>

  2. 2a :  a playing card marked with a stylized figure of a red heartb hearts plural :  the suit comprising cards marked with hearts <the five of hearts>c hearts plural in form but singular or plural in construction :  a game in which the object is to avoid taking tricks (see 1trick 4) containing hearts

  3. 3a :  personality, disposition <a cold heart>b obsolete :  intellect

  4. 4 :  the emotional or moral nature as distinguished from the intellectual nature: such asa :  generous disposition :  compassion <a leader with heart>b :  love, affection <won her heart>c :  courage or enthusiasm especially when maintained during a diffiicult situation <never lost heart>

  5. 5 :  one's innermost character, feelings, or inclinations <knew it in his heart> <a man after my own heart>

  6. 6a :  the central or innermost part :  center <a cabin in the heart of the forest>b :  the essential or most vital part of something <the heart of the city> <get to the heart of the matter>c :  the younger central compact part of a leafy rosette (as a head of lettuce or stalk of celery)

at heart

  1. :  in essence :  basically, essentially <a romantic at heart>

by heart

  1. :  by rote or from memory <knows the poem by heart>

to heart

  1. :  with deep concern <took the criticism to heart>

Examples of heart in a sentence

  1. I could feel my heart pounding.

  2. He has a bad heart.

  3. He put his hand on his heart.

  4. When she heard the news, her heart filled with joy.

  5. She just couldn't find it in her heart to forgive them.

  6. I felt in my heart that our relationship was never meant to be.

  7. a ruler without a heart

  8. Have a heart! Can't you see he needs help?

Illustration of heart

Origin and Etymology of heart

Middle English hert, from Old English heorte; akin to Old High German herza heart, Latin cord-, cor, Greek kardia


First Known Use: before 12th century


2

heart

verb

Definition of heart

  1. transitive verb
  2. 1 informal :  2love <Jane hearts John.> <I loathe beer. But I heart beer commercials … — Rochell D. Thomas>

  3. 2 archaic :  hearten

  4. 3 archaic :  to fix in the heart

Origin and Etymology of heart

see 1heart


First Known Use: before 12th century


Heart

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geographical name \ˈhärt\

Definition of Heart

  1. river in southwestern North Dakota flowing 200 miles (320 kilometers) east into the Missouri River opposite Bismarck



HEART Defined for English Language Learners

1

heart

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noun \ˈhärt\

Definition of heart for English Language Learners

  • : the organ in your chest that pumps blood through your veins and arteries

  • : the front part of your chest

  • : the heart thought of as the place where emotions are felt


HEART Defined for Kids

heart

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noun \ˈhärt\

Definition of heart for Students

  1. 1 :  a hollow muscular organ of the body that expands and contracts to move blood through the arteries and veins

  2. 2 :  something shaped like a heart <a Valentine's heart>

  3. 3 :  a part near the center or deep into the interior <They reached the heart of the desert.>

  4. 4 :  the most essential part <That's the heart of the problem.>

  5. 5 :  human feelings <Speak from your heart.>

  6. 6 :  courage or enthusiasm <I don't have the heart to tell them what happened.>

by heart

  1. :  so as to be able to repeat from memory <I think I'm going to learn his new phone number by heart. — Paula Danziger, Amber Brown>


Medical Dictionary

heart

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noun \ˈhärt\

Medical Definition of heart

  1. 1:  a hollow muscular organ of vertebrate animals that by its rhythmic contraction acts as a force pump maintaining the circulation of the blood and that in the human adult is about five inches (13 centimeters) long and three and one half inches (9 centimeters) broad, is of conical form, is placed obliquely in the chest with the broad end upward and to the right and the apex opposite the interval between the cartilages of the fifth and sixth ribs on the left side, is enclosed in a serous pericardium, and consists as in other mammals and in birds of four chambers divided into an upper pair of rather thin-walled atria which receive blood from the veins and a lower pair of thick-walled ventricles into which the blood is forced and which in turn pump it into the arteries

  2. 2:  a structure in an invertebrate animal functionally analogous to the vertebrate heart

Illustration of heart



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