Grazer (noun)

1. A person or animal that feeds on grass, leaves, or other vegetation by nibbling at them rather than biting them off.
2. A person or animal that feeds on small plants or algae by scraping them off surfaces.

Origin:

From middle english, graisen, from old english grāsian, akin to old high german grasōn to graze, old english grās grass.

Examples:

1. Cows are common grazers in a field.
2. The river was full of fish that were grazers.
3. Gazelles are grazers that feed on grasses and leaves.
4. Some species of tortoise are also grazers, eating only plants.
5. Grazer is a term used for a wide variety of animals that feed on plants and algae.