dietn.[F. dite, L. diaeta, fr. Gr. manner of living.]1. Course of living or nourishment; what is eaten and drunk habitually; food; victuals; fare.(Milton.)2. A course of food selected with reference to a particular state of health; prescribed allowance of food; regimen prescribed.()To fast like one that takes diet. (Shak.)Diet kitchen, a kitchen in which diet is prepared for invalids; a charitable establishment that provides proper food for the sick poor.()v. t.1. To cause to take food; to feed.(Shak.)2. To cause to eat and drink sparingly, or by prescribed rules; to regulate medicinally the food of.()She diets him with fasting every day. (Spenser.)v. i.1. To eat; to take one's meals.()Let him . . . diet in such places, where there is good company of the nation, where he traveleth. (Bacon.)2. To eat according to prescribed rules; to ear sparingly; as, the doctor says he must diet.()n.[F. dite, LL. dieta, diaeta, an assembly, a day's journey; the same word as diet course of living, but with the sense changed by L. dies day: cf. G. tag day, and Reichstag.] A legislative or administrative assembly in Germany, Poland, and some other countries of Europe; a deliberative convention; a council; as, the Diet of Worms, held in 1521.()