lieutenant

lieutenant is a   Noun

Definition:

[1] An officer who supplies the place of a superior in his absence; a representative of, or substitute for, another in the performance of any duty. The lawful magistrate, who is the vicegerent or lieutenant of God. Abp. Bramhall.

[2] A commissioned officer in the army, next below a captain.

[3] A commissioned officer in the British navy, in rank next below a commander.

[4] A commissioned officer in the United States navy, in rank next below a lieutenant commander.

Synonyms: