Webster's Revised Unabridged Dictionary · 1913

Lesson

Lesson (les"s'n) , noun

[Old English lessoun, French lecon lesson, reading, from Latin lectio a reading, from legere to read, collect. See Legend, and compare Lection.]

1.
Anything read or recited to a teacher by a pupil or learner; something, as a portion of a book, assigned to a pupil to be studied or learned at one time.
2.
That which is learned or taught by an express effort; instruction derived from precept, experience, observation, or deduction; a precept; a doctrine; as, to take or give a lesson in drawing.
A smooth and pleasing lesson. — Milton
Emprinteth well this lesson in your mind. — Chaucer
3.
A portion of Scripture read in divine service for instruction; as, here endeth the first lesson.
4.
A severe lecture; reproof; rebuke; warning.
She would give her a lesson for walking so late. — Sir. P. Sidney
5.
(Music) An exercise; a composition serving an educational purpose; a study.

Lesson (-s'nd) , transitive verb

To teach; to instruct. — Shakespeare
To rest the weary, and to soothe the sad, Doth lesson happier men, and shame at least the bad. — Byron