Lieutenant

n.
  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.
    1. A commissioned officer in the army, next below a captain.
    2. A commissioned officer in the British navy, in rank next below a commander.
    3. A commissioned officer in the United States navy, in rank next below a lieutenant commander.
    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
    1. 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.
    2. A deputy governor acting as the chief civil officer of one of several colonies under a governor general.