- 1an officer of middle rank in the army, navy, or air force Lieutenant Paul Fisher see second lieutenant
Want to learn more?
Find out which words work together and produce more natural sounding English with the Oxford Collocations Dictionary app.
- 2(in compounds) an officer just below the rank mentioned a lieutenant colonel
- 3a police officer or firefighter of fairly high rank
- 4a person who helps someone who is above them in rank or who performs their duties when that person is unable to
Check pronunciation: lieutenant