Definitions
1.VerbTo modulate a tone's frequency.
2.VerbTo sing like a bird, especially with trills.
3.VerbTo cause to quaver or vibrate.
4.VerbTo be quavered or modulated; to be uttered melodiously.
5.NounThe sound of one who warbles; singing with trills or modulations.
6.NounIn naval mine warfare, the process of varying the frequency of sound produced by a narrowband noisemaker to ensure that the frequency to which the mine will respond is covered.
7.NounA lesion under the skin of cattle, caused by the larva of a bot fly of genus Hypoderma.
8.NounA small hard swelling on a horse's back, caused by the galling of the saddle.