Stomachache (noun)

1. Pain or discomfort in the stomach area.
2. An ache or pain located in the stomach region, usually caused by indigestion or gas.

Origin:

From stomach + ache.

Examples:

1. He had a stomachache after eating too much junk food.
2. The stomachache made it difficult for her to focus on her work.
3. The stomachache was caused by eating spicy food.
4. He took some medicine for his stomachache.
5. The stomachache was so severe that it woke him up in the middle of the night.