Knee″brush′ (nē″brŭsh′), n. 1. (Zoöl.) A tuft or brush of hair on the knees of some species of antelopes and other animals; — chiefly used in the plural.
2. (Zoöl.) 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.