lesson

(lĕsˈən)

1. Something to be learned: lessons from observing nature.
2. a. A period of instruction; a class.
   b. An assignment or exercise in which something is to be learned.
   c. The act or an instance of instructing; teaching.
3. a. An experience, example, or observation that imparts beneficial new knowledge or wisdom.
   b. The knowledge or wisdom so acquired.
4. A rebuke or reprimand.
5. often Lesson A reading from the Bible or other sacred text as part of a religious service.

1. To teach a lesson to; instruct.
2. To rebuke or reprimand.