Mousetrap (noun)

1. A device for catching mice, typically consisting of a spring-loaded bar that snaps shut on a mouse when triggered by bait.
2. A trap or device that is used to catch or hold something.

Origin:

Mid 16th century: from mouse + trap.

Examples:

1. He set a mousetrap in the pantry to catch the mouse that had been stealing food.
2. The mousetrap caught the mouse and he released it outside.
3. He was able to build a mousetrap with a few simple materials.
4. The mousetrap was baited with a small piece of cheese.
5. The mousetrap was designed to capture the mouse without harming it.