Webster's Revised Unabridged Dictionary · 1913

Official

Official , adjective

[Latin officialis: compare French officiel. See Office, and compare Official, n.]

1.
Of or pertaining to an office or public trust; as, official duties, or routine.
That, in the official marks invested, you Anon do meet the senate. — Shakespeare
2.
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.
3.
(Pharmacy) Approved by authority; sanctioned by the pharmacopoeia; appointed to be used in medicine; as, an official drug or preparation. Compare Officinal.
4.
Discharging an office or function. [Obsolete]
The stomach and other parts official unto nutrition. — Sir T. Browne

Official , noun

[Latin officialis a magistrate's servant or attendant: compare French official. See Official, a., and compare Officer.]

1.
One who holds an office; esp., a subordinate executive officer or attendant.
2.
An ecclesiastical judge appointed by a bishop, chapter, archdeacon, etc., with charge of the spiritual jurisdiction. — Blackstone