A student at a military school who is training to be an officer.
Junior. (See also the heraldic term cadency.)
A younger or youngest son, who would not inherit as a firstborn son would.
A young gentleman learning sheep farming at a station; also, any young man attached to a sheep station.
A participant in a cadetship.
A commissioned officer of the United States Navy whose rank is above an ensign's and below a lieutenant, or a corresponding rank in other navies.
A commissioned officer in the United States Coast Guard, Public Health Service, or National Atmospheric and Oceanic Administration whose rank is above an ensign and below a lieutenant.