\War"ble\, n. [Cf. {Wormil}.]
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 larv[ae] of the gadfly
       in the backs of horses, cattle, etc. Called also
       {warblet}, {warbeetle}, {warnles}.
2. (Zo["o]l.) See {Wormil}.

\War"ble\, v. t. [imp. & p. p. {Warbled}; p. pr. & vb. n.
{Warbling}.] [OE. werbelen, OF. werbler; of Teutonic origin;
cf. G. wirbeln to turn, to warble, D. wervelen, akin to E.
whirl. See {Whirl}.]
1. To sing in a trilling, quavering, or vibratory manner; to
   modulate with turns or variations; to trill; as, certain
   birds are remarkable for warbling their songs.
2. To utter musically; to modulate; to carol.
         If she be right invoked in warbled song. --Milton.
         Warbling sweet the nuptial lay.       --Trumbull.
3. To cause to quaver or vibrate. ``And touch the warbled
   string.'' --Milton.

\War"ble\, v. i.
1. To be quavered or modulated; to be uttered melodiously.
         Such strains ne'er warble in the linnet's throat.
                                               --Gay.
3. To sing in a trilling manner, or with many turns and
   variations. ``Birds on the branches warbling.'' --Milton.
3. To sing with sudden changes from chest to head tones; to
   yodel.

\War"ble\, n.
A quavering modulation of the voice; a musical trill; a song.
      And he, the wondrous child, Whose silver warble wild
      Outvalued every pulsing sound.           --Emerson.