ELI5: Explain Like I'm 5

Lean-to

A lean-to is like a little house made of sticks and leaves. It's kind of like a fort you build outside, except it's not as fancy. You make it by finding a big tree or a big rock and leaning sticks against it so they make a triangle shape. Then you put more sticks on top of those and cover it with leaves or pine needles to keep the rain out. It's a fun place to play or hide, but you shouldn't build it too close to a fire or a river because it could be dangerous.