[ C ] an official document that gives you permission to own, do, or use something:

[ U ] the freedom to break rules or principles, or to change facts, esp. when producing literature or works of art:

to have an official document that gives you permission to own, do, or use something:

LAW, GOVERNMENT to give someone official permission to do or have something:

LAW, COMMERCE, IT to give someone permission to make, produce, or use something that you have created or that belongs to you:

LAW, COMMERCE, IT to get permission to make, produce, or use something that has been created by or belongs to another person or company, usually by paying for it: