Bedeutung von “lesson” — Learner’s Dictionary

lesson

noun [ C ] us uk /ˈlesən/
a music lessonShe's having private lessons on a one-to-one basis.My mother pushed me into having ballet lessons.Kim is taking Spanish lessons.I'm having driving lessons at the moment.
SCHOOL

A1 a period of time when a teacher teaches people:

The best way to improve your game is to take lessons.
She gives / French lessons.
Lessons start at 9 a.m.
EXPERIENCE

B2 an experience that teaches you how to behave better in a similar situation in the future:

My parents made me pay back all the money, and it was a lesson I never forgot.

(Definition von “lesson” aus dem Cambridge Learner's Dictionary © Cambridge University Press)