Definition of warble

• n. - A small, hard tumor which is produced on the back of a horse by the heat or pressure of the saddle in traveling.
• n. - A small tumor produced by the larvae of the gadfly in the backs of horses, cattle, etc. Called also warblet, warbeetle, warnles.
• n. - See Wormil.
• v. t. - 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.
• v. t. - To utter musically; to modulate; to carol.
• v. t. - To cause to quaver or vibrate.
• v. i. - To be quavered or modulated; to be uttered melodiously.
• v. i. - To sing in a trilling manner, or with many turns and variations.
• v. i. - To sing with sudden changes from chest to head tones; to yodel.
• n. - A quavering modulation of the voice; a musical trill; a song.