lanugo
la·nu·go
noun \lə-ˈnü-(ˌ)gō, -ˈnyü-\Definition of LANUGO
: a dense cottony or downy growth of hair; specifically : the soft woolly hair that covers the fetus of some mammals
See Origin of LANUGO
Latin, down, from lana wool — more at wool
First Known Use: 15th century
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