Take a dip in the lake.

Meaning: This means to quickly go into the water in a lake. It's like saying, I'm going to quickly go into the water in the lake.

Choice of Words: Take is a verb that means to grab or hold something. A is an indefinite article that refers to one of something. Dip is a noun that refers to a quick plunge into water. In is a preposition that shows a location or position. The is a definite article that points to a specific noun. Lake is a noun that refers to a large body of water. When you put them together, "Take a dip in the lake" means to quickly go into the water in a lake.