Meaning

• A spoken lesson or exposition, usually delivered to a group.

  "During class today the professor delivered an interesting lecture."

• (by extension) a class that primarily consists of a (weekly or other regularly held) lecture (as in sense 1) [usually at college or university]

  "Lecture notes are online."

• A berating or scolding.

  "I really don't want you to give me a lecture about my bad eating habits."

• The act of reading.

  "the lecture of Holy Scripture"

Meaning

• To teach (somebody) by giving a speech on a given topic.

  "The professor lectured to two classes this morning."

• To preach, to berate, to scold.

  "Emily's father lectured her about the importance of being home before midnight."