noun
lesson
LES-uhn/ˈlesn/
A unit of instruction from which understanding is gained.
The instructor gives the child a lesson in tying knots.

Etymology
Latin lectio meant “a reading.” Early English uses included a Bible reading aloud and material for a student to learn, connecting reading with instruction and, more broadly, anything learned from experience.
In context
I hope you enjoyed the lesson. I hope you learned something.
More examples
- My piano lesson starts at four.
- Today's lesson covers fractions.
- Losing my notes teaches me a lesson about backing up files.
Forms
lesson · lessons
Similar words
- class
- A scheduled teaching session, often involving several students at once.
- tutorial
- Guided instruction focused on a particular task or topic.