Official n. : Of or pertaining to an office or public trust; as, official duties, or routine.

Official n. : Derived from the proper office or officer, or from the proper authority; made or communicated by virtue of authority; as, an official statement or report.

Official n. : Approved by authority; sanctioned by the pharmacopoeia; appointed to be used in medicine; as, an official drug or preparation. Cf. Officinal.

Official n. : Discharging an office or function.

Official a. : One who holds an office; esp., a subordinate executive officer or attendant.

Official a. : An ecclesiastical judge appointed by a bishop, chapter, archdeacon, etc., with charge of the spiritual jurisdiction.

Example:
How do i put an Official music video onto youtube?

Taxonomy
government, duty, officialis, officials, registry office, free encyclopedia, exercise, adjective, diocese, apology, virtue, carries, legally, government official, functionary, Judicial Vicar, strike, public official.

Defination from the web:
official is someone who holds an office (function or mandate, regardless whether it carries an actual working space with it) in an ... An official holiday is a public holiday, having national (or regional) recognition. ...