A section of learning or teaching into which a wider learning content is divided. / A learning task assigned to a student; homework. / Something learned or to be learned.

To give a lesson to; to teach.

(property law) The owner of property that is leased; the landlord to a lease.

(transitive) To make less; to diminish; to reduce. / (intransitive) To become less.

(nonstandard, dialect) unless.

A lesson taught (especially to young children) using a familiar or unusual object as a focus. / An example from real life that explains a principle or teaches a lesson.

(law) A crime the elements of which coincide with the elements of a more serious crime, from which the prosecutor is therefore precluded from separately charging a criminal defendant.

(Christianity) A reading from one of the New Testament epistles (written by St. Paul and others); one of the usual four readings from the Bible found in many (Sunday) Christian church services, in various denominations.

present participle of lessen

A growing lesser; reduction or decrease.