"warbles" in the noun sense
1. warble
a lumpy abscess under the hide of domestic mammals caused by larvae of a botfly or warble fly
"warbles" in the verb sense
1. warble, trill, quaver
sing or play with trills, alternating with the half note above or below
2. yodel, warble, descant
sing by changing register sing by yodeling
"The Austrians were yodeling in the mountains"
Source: WordNet® (An amazing lexical database of English)
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