D defs.my
Entry 4 senses Webster, 1913

Cadet

/kəd-ĕt'/ · Ca·det · IPA /kəˈdɛt/
01 n. The younger of two brothers; a younger brother or son; the youngest son.
  1. 1.
    The younger of two brothers; a younger brother or son; the youngest son.
    “The cadet of an ancient and noble family.” — Wood.
  2. 2.
    A gentleman who carries arms in a regiment, as a volunteer, with a view of acquiring military skill and obtaining a commission.(Mil.)
  3. 3.
    In New Zealand, a young gentleman learning sheep farming at a station; also, any young man attached to a sheep station.
  4. 4.
    A young man who makes a business of ruining girls to put them in brothels.[Slang, U. S.]