(1):

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

(2):

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

(3):

(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.

(4):

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

(5):

(n.) Discharging an office or function.

(6):

(a.) One who holds an office; esp., a subordinate executive officer or attendant.