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 larvae of the gadfly in the backs of horses, cattle, etc. Called also warblet, warbeetle, warnles. [ 1913 Webster ]

2. (Zool.) See Wormil. [ 1913 Webster ]

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. [ 1913 Webster ]

2. To utter musically; to modulate; to carol. [ 1913 Webster ]

If she be right invoked in warbled song. Milton. [ 1913 Webster ]

Warbling sweet the nuptial lay. Trumbull. [ 1913 Webster ]

3. To cause to quaver or vibrate. “And touch the warbled string.” Milton. [ 1913 Webster ]

Such strains ne'er warble in the linnet's throat. Gay. [ 1913 Webster ]

3. To sing in a trilling manner, or with many turns and variations. “Birds on the branches warbling.” Milton. [ 1913 Webster ]

3. To sing with sudden changes from chest to head tones; to yodel. [ 1913 Webster ]

And he, the wondrous child,
Whose silver warble wild
Outvalued every pulsing sound. Emerson. [ 1913 Webster ]

In lulling strains the feathered warblers woo. Tickell. [ 1913 Webster ]

2. (Zool.) Any one of numerous species of small Old World singing birds belonging to the family Sylviidae, many of which are noted songsters. The bluethroat, blackcap, reed warbler (see under Reed), and sedge warbler (see under Sedge) are well-known species. [ 1913 Webster ]

3. (Zool.) Any one of numerous species of small, often bright colored, American singing birds of the family or subfamily Mniotiltidae, or Sylvicolinae. They are allied to the Old World warblers, but most of them are not particularly musical. [ 1913 Webster ]

☞ The American warblers are often divided, according to their habits, into bush warblers, creeping warblers, fly-catching warblers, ground warblers, wood warblers, wormeating warblers, etc. [ 1913 Webster ]

Bush warbler (Zool.) any American warbler of the genus Opornis, as the Connecticut warbler (Opornis agilis). --
Creeping warbler (Zool.), any one of several species of very small American warblers belonging to Parula, Mniotilta, and allied genera, as the blue yellow-backed warbler (Parula Americana), and the black-and-white creeper (Mniotilta varia). --
Fly-catching warbler (Zool.), any one of several species of warblers belonging to Setophaga, Sylvania, and allied genera having the bill hooked and notched at the tip, with strong rictal bristles at the base, as the hooded warbler (Sylvania mitrata), the black-capped warbler (Sylvania pusilla), the Canadian warbler (Sylvania Canadensis), and the American redstart (see Redstart). --
Ground warbler (Zool.), any American warbler of the genus Geothlypis, as the mourning ground warbler (Geothlypis Philadelphia), and the Maryland yellowthroat (see Yellowthroat). --
Wood warbler (Zool.), any one of numerous American warblers of the genus Dendroica. Among the most common wood warblers in the Eastern States are the yellowbird, or yellow warbler (see under Yellow), the black-throated green warbler (Dendroica virens), the yellow-rumped warbler (Dendroica coronata), the blackpoll (Dendroica striata), the bay-breasted warbler (Dendroica castanea), the chestnut-sided warbler (Dendroica Pennsylvanica), the Cape May warbler (Dendroica tigrina), the prairie warbler (see under Prairie), and the pine warbler (Dendroica pinus). See also Magnolia warbler, under Magnolia, and Blackburnian warbler. [ 1913 Webster ]