To quaver a sound or the voice; to modulate with turns or variations. Certain birds are remarkable for warbling their songs.

To cause to quaver. And touch the warbled string.

To utter musically; to be modulated. If she be right invokd with warbled song. Warbling sweet the nuptial lay.

To be quavered or modulated. Such strains neer warble in the linnets throat.

To be uttered melodiously; as warbling lays. For warbling notes from inward cheering flow.

To sing. Birds on the branches warbling.