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Meaning of heartburn

heart•burn

Pronunciation: (härt'bûrn"), [key]
— n.
  1. an uneasy burning sensation in the stomach, typically extending toward the esophagus, and sometimes associated with the eructation of an acid fluid.
  2. bitter jealousy; envy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
heartbroken heartburning