oatmeal

From Middle English otemele, from ote (“oat”) + mele (“meal”).

oatmeal (usually uncountable, plural oatmeals)

1. Meal made from rolled or round oats.
   • 2013 July-August, Stephen P. Lownie, David M. Pelz, “Stents to Prevent Stroke”, in American Scientist:

     As we age, the major arteries of our bodies frequently become thickened with plaque, a fatty material with an oatmeal-like consistency that builds up along the inner lining of blood vessels. The reason plaque forms isn’t entirely known, but it seems to be related to high levels of cholesterol inducing an inflammatory response, which can also attract and trap more cellular debris over time.

2. A breakfast cereal made from rolled oats, cooked in milk and/or water (porridge in UK).
3. A light greyish brown colour, like that of oatmeal.

   oatmeal colour:  

oatmeal (not comparable)

1. Of a light greyish brown colour, like that of oatmeal
   • 1929, Homes and Gardens magazine

     Boldly patterned textiles in oatmeal tones with a woven design in a strongly contrasting colour can be used alike for upholstery and as a wall hanging […]

• oatmeal drink
• oatmeal porridge