Monday word: qiviut

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qiviut  (kē′vē-ət, -o͞ot′), noun.
The soft inner wool from the undercoat of the muskox.

Etymology:  from Inuit qiviuq, down or underhair.

Qiviut - or qiviuq - is said to be an extaordinary wool:  soft, warm, and light.
It is said to be eight times warmer than sheep's wool.