Mower (noun)

1. A machine for cutting grass or other vegetation, typically powered by an internal combustion engine or electricity.
2. A tool or device used for cutting down the grass or other vegetation in a field or lawn.

Origin:

Middle english: from mowe "grass, hay" (see mow).

Examples:

1. He used a lawn mower to cut the grass.
2. She used a riding mower to mow the large lawn.
3. The farmer used a tractor-mounted mower to cut the hay.
4. The park workers used a push mower to keep the grass short.
5. He purchased a new mower to replace the old one.