IPA: /ˈhɑːrteɪk/
KK: /ˈhɑrtˌeɪk/
A feeling of great sadness or emotional pain, often caused by loss or disappointment.
After the breakup, she felt a deep heartache that was hard to bear.
Heartache is formed from "heart" (from Old English "heorte", meaning the organ that pumps blood and also symbolizes emotion) and "ache" (from Old English "acan", meaning to suffer or feel pain). The word describes the emotional pain or suffering associated with love or loss, symbolized by the heart.
Think of the heart as the center of emotions, and when you feel an 'ache', it represents the pain of emotional suffering.