- Sing with trills - Sing, like a bird - A small, hard tumor which is produced on the back of a
horse by the heat or pressure of the saddle in traveling. - A small tumor produced by the larvae of the gadfly in the
backs of horses, cattle, etc. Called also warblet, warbeetle, warnles. - See Wormil. - 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. - To utter musically; to modulate; to carol.