The Collaborative International Dictionary
Yodel \Yo"del\, Yodle \Yo"dle\, v. t. & i. [imp. & p. p. Yodeled, Yodled; p. pr. & vb. n. Yodeling, Yodling.] To sing in a manner common among the Swiss and Tyrolese mountaineers, by suddenly changing from the head voice, or falsetto, to the chest voice, and the contrary; to warble.
vb. (en-past of: yodle)