Definitions

1. noun

a piece of information or a skill that is taught or learned, especially in a school or educational setting

“The teacher used the lesson to explain the importance of teamwork in the project.”

2. verb

to teach or show someone something, especially in a school or educational setting

“The instructor lessoned the students on the proper techniques for playing the guitar.”

3. noun

a warning or a cautionary experience that teaches someone a valuable lesson

“She learned a hard lesson from her failed business venture.”