What does «permitido» mean in Spanish?

Authorized, consented, legal.

Examples of use in Spanish: "es su libro permitido".

"equipaje permitido".
Food, usually tasty, that someone indulges in a diet to lose weight. By extension, applicable to other temptations or treats that someone indulges in.

Examples of use in Spanish: "es mi permitido del día, la dieta me lo permite".

"los permitidos de mi dieta".

"dieta: el lado bueno de un permitido".