cadet

A student at a military school who is training to be an officer.

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.)

“a cadet branch of the family”

A young man who makes a business of ruining girls to put them in brothels.

A young gentleman learning sheep farming at a station; also, any young man attached to a sheep station.