knock up

The phrase "knock up" can have different meanings depending on the context: 1. To get someone pregnant: This is a slang term used to describe impregnating someone. It refers to a man making a woman pregnant, usually resulting from sexual intercourse. 2. To wake someone up: In some informal contexts, "knock up" may also mean to wake someone up by knocking on their door or creating a noise to alert them. It is important to note that the phrase is colloquial and can have different connotations and nuances depending on the region and cultural context in which it is used.