Definition from Wiktionary, the free dictionary
officer (plural officers)
- One who has a position of authority in a hierarchical organization, especially in military, police or government organizations.
- One who holds a public office.
- An agent or servant imparted with the ability, to some degree, to act on initiative.
- (colloquial, military) A commissioned officer.
Derived terms 
Related terms 
one who has a position of authority in a hierarchical organization
one who holds a public office
an agent or servant imparted with the ability to act on initiative
a contraction of the term "commissioned officer"
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Translations to be checked
(transitive) To command like an officer