lesson

Etymology

From Middle English lessoun, from Old French leçon, from Latin lēctiō, lēctiōnem (“a reading”), from legō (“I read, I gather”). Doublet of lection.

verb

1. (archaic) To instruct to teach.

noun

1. A section of learning or teaching into which a wider learning content is divided.
   In our school a typical working week consists of around twenty lessons and ten hours of related laboratory work.
2. A learning task assigned to a student; homework.
3. Something learned or to be learned.
   Nature has many lessons to teach to us.
4. Something that serves as a warning or encouragement.
   I hope this accident taught you a lesson!
   The accident was a good lesson to me.
5. A section of the Bible or other religious text read as part of a divine service.
   Here endeth the first lesson.
6. A severe lecture; reproof; rebuke; warning.
7. (music) An exercise; a composition serving an educational purpose; a study.

verb

1. To give a lesson to; to teach.