Definition of heart-scald in US English:

heart-scald

noun

Irish English, English Regional, Scottish, Northern
  • 1Originally: a feeling of disgust or aversion. Later: a feeling of bitter disappointment or sorrow; a cause of this.

  • 2Now Orkney and Shetland. = "heartburn".

Origin

Early 17th century; earliest use found in Zachary Boyd (1585–1653), Church of Scotland minister and university administrator. From heart + scald.

Pronunciation

heart-scald

/ˈhɑːtskɔːld/