Emily Dickinson Lexicon

WAR'BLE, v.i. [G. wirbeln, to turn, whirl, warble; wirbel, a whirl, a vortex; wirbelbein, a turning bone or joint; L. vertebra; Dan. hvirvler, Eng. to whirl. These words are all of one family; L. verto, Eng. veer, vary, &c.]

1. To quaver a sound or the voice; to modulate with turns or variations. Certain birds are remarkable for warbling their songs.
2. To cause to quaver. And touch the warbled string. – Milton.
3. To utter musically; to be modulated. If she be right invok'd with warbled song. – Milton. Warbling sweet the nuptial lay. – Trumbull.