D defs.my
Entry 2 senses Webster, 1913

Lieutenant

/(lū̇*tĕn"ant)/ · Lieu·ten·ant · IPA /lɛfˈtɛn.ənt/
01 n. 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.
  1. 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. 2.
    A commissioned officer in the army, next below a captain.
Phrases & compounds
Deputy lieutenant — the title of any one of the deputies or assistants of the lord lieutenant of a county.
Lieutenant colonel — an army officer next in rank above major, and below colonel.
Lieutenant commander — an officer in the United States navy, in rank next below a commander and next above a lieutenant.
Lieutenant general — See in Vocabulary.
Lieutenant governor — An officer of a State, being next in rank to the governor, and in case of the death or resignation of the latter, himself acting as governor.