oatmeal

Meal that is made from oats; rolled or ground oats.

A porridge that is made from rolled or ground oats.

Meal made from oats. The grain, with the husk removed, is kiln-dried and ground.

A mush or porridge prepared from oatmeal.

[capitalized] One of a band of riotous profligates who infested the streets of London in the seventeenth century.