Indigestion (noun)

1. Discomfort or pain in the upper abdomen often associated with eating or drinking.
2. Difficulty in digesting food.

Origin:

Early 16th century (in the sense "difficulty in digesting"): from latin indigestio(n-), from in- "not" + digestio (see digestion).

Examples:

1. I had a bad case of indigestion after eating that spicy meal.
2. He was suffering from indigestion and had to take antacids.
3. The doctor diagnosed her with indigestion and prescribed her some medicine.
4. Eating too quickly can cause indigestion.
5. Indigestion can also be caused by stress.