warble \war"ble\, n. cf. wormil.
   1913 webster
   1. far.
      a a small, hard tumor which is produced on the back of a
          horse by the heat or pressure of the saddle in
          traveling.
      b a small tumor produced by the larvae of the gadfly in
          the backs of horses, cattle, etc. called also
          warblet, warbeetle, warnles.
          1913 webster

   2. zool. see wormil.
      1913 webster
see also:
wormil warblet warbeetle warnles