charter
US /ˈtʃɑːr.t̬ɚ/
UK /ˈtʃɑːr.t̬ɚ/

1.
a written grant by the sovereign or legislative power of a country, by which a body such as a borough, company, or university is created or its rights and privileges defined
:
•
The city received its royal charter in 1205.
•
The company operates under a new corporate charter.
1.