heart-aching1
/ˈhɑːteɪkɪŋ/noun
Emotional pain or anguish; an instance or expression of this. Also literal : †pain in the region of the heart, especially heartburn ( obsolete ).
Origin
Early 17th century; earliest use found in Thomas Dekker (c1572–1632), playwright and pamphleteer. From heart + aching.
heart-aching2
/ˈhɑːteɪkɪŋ/adjective
That causes or is characterized or accompanied by heartache. Later also more generally: deeply moving; expressing or expressive of intense feeling.
Origin
Early 17th century; earliest use found in Boccaccio's Decameron. From heart + aching, probably after either heartache or heart-aching.