overhair
/ˈəʊvəˌhɛː/noun
A component of the fur in many mammals which consists of relatively long hairs (guard hairs) extending beyond the shorter fur (underfur or undercoat) to form a sparser outer layer. Also occasionally: one of these hairs; a guard hair.
Origin
Late 19th century; earliest use found in Harper's Magazine. From over- + hair.