Webster's Revised Unabridged Dictionary · 1913

Officer

Officer , noun

[French officier. See Office, and compare Official, n.]

1.
One who holds an office; a person lawfully invested with an office, whether civil, military, or ecclesiastical; as, a church officer; a police officer; a staff officer.
I am an officer of state. — Shakespeare
2.
(U. S. Military) Specifically, a commissioned officer, in distinction from a warrant officer or an enlisted man.
Collocations (3)
Field officer or General officer , etc. See under Field, General. etc.
Officer of the day (Military) , the officer who, on a given day, has charge for that day of the guard, prisoners, and police of the post or camp; abbreviated O. D., OD, or O. O. D.
Officer of the deck or Officer of the watch (Nautical) , the officer temporarily in charge on the deck of a vessel, esp. a war vessel.

Officer , transitive verb

1.
To furnish with officers; to appoint officers over. — Marshall
2.
To command as an officer; as, veterans from old regiments officered the recruits.