warble
1. [ verb ] (music) sing or play with trills, alternating with the half note above or below
Synonyms: quaver trill
Related terms: sing eighth_note
2. [ verb ] (music) sing by changing register; sing by yodeling
Synonyms: descant yodel
Examples:

"The Austrians were yodeling in the mountains"

Related terms: sing descant yodel
3. [ noun ] (medicine) a lumpy abscess under the hide of domestic mammals caused by larvae of a botfly or warble fly
Related terms: animal_disease
Similar spelling:   warbler