I. ˈ ̷ ̷ˌ ̷ ̷ noun
1. : crushing grief
the sorrow and the heartbreak which … abide in the homes of so many of our neighbors — H.S.Truman
2. : something that causes heartbreak
proved a … heartbreak to the authors of his being — C.G.Glover
II. transitive verb
Etymology: back-formation from heartbroken
: to break the heart of