underwool


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un·der·wool

 (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]
References in periodicals archive ?
Muskoxen (Ovibos moschatus) have been farmed since the 1960s for their fiber, called qiviut, a luxurious and highly valued underwool that is their primary insulation during the Arctic winter.
His goal was to determine whether the animal could be domesticated and used for its fine underwool, called Qiviut.
CASHMERE is the fine underwool found beneath the rough external coat of Kashmir goats which live on the mountains in the Chinese province of Inner Mongolia.