Nouns

(n)license, licence, permita legal document giving official permission to do something
(n)license, licencefreedom to deviate deliberately from normally applicable rules or practices (especially in behavior or speech)
(n)license, licenceexcessive freedom; lack of due restraint“when liberty becomes license, dictatorship is near” (Will Durant), “the intolerable license with which the newspapers break … the rules of decorum” (Edmund Burke)
(n)license, permission, permitthe act of giving a formal (usually written) authorization

Verbs

(v)license, licence, certifyauthorize officially“I am licensed to practice law in this state”