diet
1. The usual food and drink of a person or animal.
2. A regulated selection of foods, as for medical reasons or cosmetic weight loss.
3. Something used, enjoyed, or provided regularly: subsisted on a diet of detective novels during his vacation.
4. Of or relating to a food regimen designed to promote weight loss in a person or an animal: the diet industry.
5. a. Having fewer calories.
b. Sweetened with a noncaloric sugar substitute.
6. Designed to reduce or suppress the appetite: diet pills; diet drugs.
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7. A national or local legislative assembly in certain countries, such as Japan.
8. A formal general assembly of the princes or estates of the Holy Roman Empire.
9. (Law) Scots law:
a. the date fixed by a court for hearing a case
b. a single session of a court