definition of 

heart

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noun British English pronunciation: heart /hɑː(r)t/ 
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singularheart
pluralhearts
  1. 1
    [countable] the organ in your chest that makes blood flow around your body

    I could hear his heart beating.

    have a weak/bad heart:

    Did you know he had a weak heart?

  2. 3
    [countable] your feelings and emotions considered as part of your character

    My advice would be to follow your heart.

    have a kind/good/big heart (=be a kind/good/generous person):

    Ted may not be rich but he’s got a good heart.

  3. 4
    [singular] the central part of something, that is furthest from the outside
    heart of:

    They live in the heart of the city’s medieval quarter.

    a beautiful house deep in the heart of the English countryside

  4. 5
    [singular] the most important or basic part of something
    go/get to the heart of something (=relate to its most important part):

    These questions go to the heart of the current debate.

    be at the heart of something:

    Cost-cutting is at the heart of their development plan.

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