To break the heart of
Related to To break the heart of: Broken heart
|To bring to despair or hopeless grief; to cause to be utterly cast down by sorrow.|
|To bring almost to completion; to finish very nearly; - said of anything undertaken; as, he has broken the heart of the task.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.