1st lieutenant is a noun meaning "a commissioned officer in the Army or Air Force or Marines ranking above a 2nd lieutenant and below a captain". It carries one recorded sense.
a commissioned officer in the Army or Air Force or Marines ranking above a 2nd lieutenant and below a captain
Definitions, synonyms and semantic relations for 1st lieutenant come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.