The Collaborative International Dictionary of English v.0.48:

Lanuginose \La*nu"gi*nose`\, Lanuginous \La*nu"gi*nous\, a. [L.
   lanuginosus, fr. lanugo, -ginis, woolly substance, down, fr.
   lana wool: cf. F. lanugineux.]
   Covered with down, or fine soft hair; downy.
   [1913 Webster]