1. A formal talk or speech given to an audience, especially for the purpose of teaching or informing them about a particular subject: This is the most common meaning. Examples:
* "The professor gave a lecture on the history of the Roman Empire."
* "I attended a lecture about climate change."
2. A lengthy and often critical talk or scolding: This meaning is more informal and usually used to describe someone being reprimanded. Examples:
* "My mother gave me a lecture about cleaning my room."
* "The manager gave the employee a lecture about being late."
3. The act of giving a formal talk or speech: This is used in a more abstract sense. Examples:
* "She was skilled in the art of lecturing."
* "The student excelled at lecturing on scientific topics."
4. A formal discourse or address, especially one delivered at a university or other institution of learning: This is a more formal usage, often referring to academic lectures.
5. A reading or recital from a book or other written work: This meaning is less common but can be used in certain contexts.
The meaning of "lecture" is often determined by the context in which it is used.