fatlayer

noun
UK /ˈfætˌleɪ.ər/
US /ˈfætˌleɪ.ɚ/

A fat layer is a soft, thick blanket of fat under the skin that keeps an animal warm.

The seal has a thick fat layer that keeps it warm in icy water.


OTHER MEANINGS

2. A layer of fat used in cooking or food preparation.

Skim off the fat layer that rises to the top of the soup.

3. A buildup of fat on the surface of a liquid.

A fat layer formed on the cooled broth overnight.

4. A figurative covering of excess fat on a person or animal.

The bear's fat layer grew thicker before winter.