peniculus

Etymology
A form of, formed as  (suffix forming diminutives), so, literally, “a little tail” or "a little penis".

Proper noun

 * 1) a  [for removing dust]
 * 2) a  a soft kind used for medical purposes
 * 3) a ’s brush
 * 4)  a  kind of whip
 * 1)  a  kind of whip