Definitions

1. noun

an address or talk, typically given to a group of people, especially students, on a particular subject

“The professor gave a lecture on the history of the Civil War.”

2. verb

to speak or give a lecture to (someone)

“The teacher lectured the students on the importance of time management.”

3. verb

to speak or say something in a loud and critical tone

“She lectured him on his behavior, saying he was being irresponsible.”