noun
A student at a military school who is training to be an officer.
(chiefly history) A younger or youngest son, who would not inherit as a firstborn son would.
(in compounds, chiefly in genealogy) Junior. (See also the heraldic term cadency.)
(archaic, US, slang) A young man who makes a business of ruining girls to put them in brothels.
(New Zealand, historical) A young gentleman learning sheep farming at a station; also, any young man attached to a sheep station.
(Australia) A participant in a cadetship.