A Diet

1. The food and beverage a person or animal consumes.
2. (countable) A controlled regimen of food and drink, as to gain or lose weight or otherwise influence health.
3. (by extension) Any habitual intake or consumption.
4. (usually capitalized as a proper noun) A council or assembly of leaders; a formal deliberative assembly.
5. (Scotland) A session of exams
6. (Scotland, law) The proceedings under a criminal libel.
7. (Scotland) A clerical or ecclesiastical function in Scotland