warble

warble v.

鳥鳴, 用柔和的顫聲唱

n.

鳥囀, 顫聲

英英解釋:名詞warble:
1. a lumpy abscess under the hide of domestic mammals caused by larvae of a botfly or warble fly
動詞warble:
1. sing or play with trills, alternating with the half note above or below
同義詞：trill, quaver
2. sing by changing register; sing by yodeling
同義詞：yodel, descant