underfur


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Related to underfur: Guard hairs

underfur

(ŭn′dər-fûr′)
n.
The soft, fine undercoat of certain mammals, such as otters, beavers, and seals.
References in periodicals archive ?
Actually, sea otters have two layers of fur - an exterior "guard hair" and a soft underfur.
The underfur traps air to keep the otter's skin dry and keep it afloat.
Pashmina is the rarest type of cashmere made from the underfur of Tibetan goats.