heartburn

noun

Etymology: From Middle English hertbryne, herte-bren (“lust", also "heartburn”, literally “heart burn”), equivalent to heart + burn. Compare also Middle English herte-brennyng (“anger, bitterness, heartburn”, literally “burning of/in the heart, heart-burning”). Compare also Ancient Greek καρδιαλγία (kardialgía), from καρδία (kardía, “heart”) + ἄλγος (álgos, “pain”). From being a burning sensation near the location of the heart in the chest.

1. A burning pain in the chest that is caused by stomach acid entering the gullet.

   “Coordinate term: cardiodynia”

2. annoyance, heartache, or similar feelings.

   “”There’s some heartburn about the fact the message is getting stepped on,” said Mark McKinnon, Bush’s campaign media strategist.”

   “America’s policy of containing both the Soviet Union and its Chinese ally did cause some heartburn in Tokyo.”