lieutenant junior grade

English Thesaurus

1. an officer holding a commissioned rank in the United States Navy or United States Coast Guard; below lieutenant and above ensign (noun.person)

hypernym	:	commissioned naval officer,
definition	:	a commissioned officer in the navy (noun.person)

domain category	:	armed forces, armed services, military, military machine, war machine,
definition	:	the military forces of a nation (noun.group)