rat-tail

Noun

 * 1)  A towel that has been tightly twisted along the diagonal to make a rudimentary whip with a towel corner at the tip, typically used in juvenile pranks.
 * 2) An excrescence growing from the pastern to the middle of the shank of a horse.
 * 3) A fish, a  (, syn. ).
 * 4) Any fish of the genus ; a grenadier.