Definition of diets:
(n) :
The food and beverage a person or animal consumes.
(n) :
(countable) A controlled regimen of food and drink choices, as to gain or lose weight or otherwise influence health.
(n) :
(by extension) Any habitual intake or consumption.
(v) :
(intransitive) To modify one's food and beverage intake so as to decrease or increase body weight or influence health.
(adj) :
(of a food or beverage) Containing less fat, salt, sugar, or calories than normal, or claimed to have such.
(adj) :
(informal, figurative) Having certain traits subtracted.