1. gave a formal talk or speech to teach or inform an audience
2. scolded or criticized someone at length

Examples

• The professor lectured about ancient history for two hours.
• She lectured at the university every Tuesday morning.
• He lectured the medical students on proper procedures.
• My mother lectured me about staying out too late.
• The coach lectured the team after their poor performance.
• The guest speaker lectured on environmental conservation.
• She lectured her children about the importance of honesty.