1A burning or sour sensation in the chest or throat caused by stomach acid reflux (heartburn).
昨夜食べ過ぎて、今朝ずっと胸焼けがする。
I ate too much last night and have had heartburn all morning.
脂っこいものを食べると胸焼けを起こしやすい。
Eating greasy foods tends to cause heartburn.
胸焼けがひどいときは、胃薬を飲んだり医者に相談したほうがいい。
When heartburn is severe, it's best to take antacid medicine or consult a doctor.