What is the meaning of diet?

noun

• A prescribed selection of foods.
• A legislative assembly in certain countries (e. G., Japan. )
• The usual food and drink consumed by an organism (person or animal. )
• The act of restricting your food intake (or your intake of particular foods.
  • synonyms: dieting

verb

• Follow a regimen or a diet, as for health reasons.
  • usage: "He has high blood pressure and must stick to a low-salt diet"
• Eat sparingly, for health reasons or to lose weight. .