Spyglass (noun)

1. A device used for viewing objects at a distance, typically consisting of a tube with a convex lens at one end and an eyepiece at the other.
2. A telescope with a low magnification.

Origin:

From the dutch word spyglass, a combination of spy meaning to look out, and glass meaning lens.

Examples:

1. He used his spyglass to see the distant ship.
2. She brought her spyglass to the beach to watch the passing whales.
3. The sailors spotted land with the help of a spyglass.
4. He trained the spyglass on the bird's nest.
5. The spyglass was a useful tool for the astronomer to observe the stars.