Indigestion

noun

1. Inability to digest or difficulty in digesting something, especially food.
2. Discomfort or illness resulting from this inability or difficulty.
3. Want of digestion; incapability of or difficulty in digesting food; dyspepsia.
4. Discomfort due to a lack of proper digestive action; a failure of the normal changes which food should undergo in the alimentary canal; dyspepsia; incomplete or difficult digestion.
5. A common medical condition most often caused by eating too quickly.