noun
A student who works while attending school, often to support themselves financially.
彼は勤学学生として、夜間のアルバイトをしながら大学に通っている。
He attends university as a working student, holding a part-time job at night.
Compound of 勤学 (diligent study) and 学生 (student). The exact historical derivation is uncertain, but the term is conventionally associated with students who work to support their education.