cadet

noun

1. 1

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

2. 2

   A younger or youngest son, who would not inherit as a firstborn son would.

3. 3

   (in compounds, chiefly in genealogy) Junior. (See also the heraldic term cadency.)

   “a cadet branch of the family”

4. 4

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

5. 5

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