underwool


un·der·wool

U0062750 (ŭn′dər-wo͝ol′)n. The soft woolly undercoat of certain animals, especially sheep.

underwool

(ˈʌndəˌwʊl) n (Zoology) the lower layer of an animal's coat

un•der•fur

(ˈʌn dərˌfɜr)

n. the soft, thick undercoat of fur animals, as the seal and beaver. [1875–80]