lieutenant: meaning and definitions

A commissioned rank in the U.S. Navy or Coast Guard that is above lieutenant junior grade and below lieutenant commander.

A first lieutenant.

A second lieutenant.

One who holds the rank of lieutenant, first lieutenant, or second lieutenant.

A commissioned officer in the British and Canadian navies ranking just below a lieutenant commander.

An officer in a police or fire department ranking below a captain.

One who acts in place of or represents a superior; an assistant or deputy: the organized crime figure and his lieutenants. See Synonyms at assistant.