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warm the cockles of one's heart

Cultural  
  1. To cause a feeling of affectionate happiness: “The thought of his grandmother was enough to warm the cockles of his heart.”


warm the cockles of one's heart Idioms  
  1. Gratify one, make one feel good, as in It warms the cockles of my heart to see them getting along so well. This expression uses a corruption of the Latin name for the heart's ventricles, cochleae cordis. [Second half of 1600s]