Rat-tail

from The Collaborative International Dictionary of English v.0.48

Rat-tail \Rat"-tail`\ (r[a^]t"t[=a]l`), a.
   Like a rat's tail in form; as, a rat-tail file, which is
   round, slender, and tapering. See Illust. of {File}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Rat-tail \Rat"-tail`\, n.
   1. (Far.) pl. An excrescence growing from the pastern to the
      middle of the shank of a horse.
      [1913 Webster]

   2. (Zool.)
      (a) The California chimaera. See {Chimaera}.
      (b) Any fish of the genus {Macrurus}. See {Grenadier}, 2.
          [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

20 Moby Thesaurus words for "rattail":
      braid, brush, bun, cauda, caudal appendage, caudation, chignon,
      coil, cue, dock, fantail, knot, pigtail, plait, queue, stub, tail,
      tailpiece, topknot, twist

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