cadet

noun

1. Now Rare a younger son or brother
2. Historical a younger son who became a gentleman volunteer in the army to offset his lack of patrimony
3. a student in training at an armed forces academy
4. a student at a military school
5. ☆ any trainee, as a practice teacher or a junior business associate
6. ☆ Slang a pimp

Origin: Fr, younger son < Gascon capdet, captain, chief < Prov capdel < LL capitellum, dim. of L caput, head