EXAMPLES FROM THE WEB FOR WARBLE
Carol and warble are especially applied to the singing of birds.
Who teaches the young chipper to trill, and the young linnet to warble?
He used to wake her in the morning with a kiss, and warble his little greeting.
Some imitate the songs of other birds and warble very sweetly.
Her warble resembled that of the male, but was neither so strong nor so varied.
I lean over a rail to hear what is in the air, liquid with the bluebird's warble.
And without waiting any longer, she began to warble her songs.
I can sing a little, too,” said Mr. Humphreys; “we might warble together.
But Rose, for some reason or other, did not warble as usual this morning.
"Somehow I don't remember just what Warble looks like," Peter confessed.
c.1300, from Old North French werbler "to sing with trills and quavers," from Frankish *werbilon (cf. Old High German wirbil "whirlwind," German Wirbel "whirl, whirlpool, tuning peg, vertebra," Middle Dutch wervelen "to turn, whirl"); see whirl. The noun meaning "tune, melody" is recorded from c.1300. Related: Warbled; warbling.