1. annual grass of Europe and North Africa; grains used as food and fodder (referred to primarily in the plural: `oats')

Definition categories: plant, cereal

2. seed of the annual grass Avena sativa (spoken of primarily in the plural as `oats')

Definition categories: food, cereal, grain

Sentences with oat as a noun:

- The oat stalks made good straw.

- The main forms of oat are meal and bran.

- World trade in oat is increasing.

- The wild red oat is thought to be the ancestor of modern food oats.