1
- a person holding a position of authority, especially one with a commission, in the armed services, the mercantile marine, or on a passenger ship军官; （商船）船长; 高级船员; （客轮）船长; 高级船员。
1.1
- a policeman or policewoman警官。
1.2
- a bailiff法警。
2
- a holder of a public, civil, or ecclesiastical office政府官员; 担任公职者; 基督教教会执事：
a probation officer
缓刑犯监护官
the Chief Medical Officer.
首席卫生官。
2.1
- a holder of a post in a society, company, or other organization, especially one who is involved at a senior level in its management（尤指社团、公司等组织中的高层）职员：
a chief executive officer.
首席执行官。
3
- a member of a certain grade in some honorary orders, such as the grade next below commander in the Order of the British Empire某一荣誉等级中的一分子（如英帝国勋位中四等勋爵士以下的级别）。
with obj.
1- provide with military officers配备军官：
the aristocracy continued to wield considerable political power, officering the army.
贵族继续掌握主要政治大权, 为军队配备军官。
1.1
- act as the commander of (a unit)指挥：
foreign mercenaries were hired to officer new regiments.
国外雇佣兵受雇指挥新的团。
词源
Middle English: via Anglo-Norman French from medieval Latin officiarius, from Latin officium （see OFFICE）.