Source : Webster's Revised Unabridged Dictionary (1913)

Kneebrush \Knee"brush`\ (n[=e]"br[u^]sh`), n.
   1. (Zo["o]l.) A tuft or brush of hair on the knees of some
      species of antelopes and other animals; -- chiefly used in
      the plural.

   2. (Zo["o]l.) A thick mass or collection of hairs on the legs
      of bees, by aid of which they carry the collected pollen
      to the hive or nest; -- usually in the plural.