yodel
         n 1: a songlike cry in which the voice fluctuates rapidly
               between the normal voice and falsetto
         v 1: sing by changing register; sing by yodeling; "The Austrians
               were yodeling in the mountains" [syn: {yodel}, {warble},
               {descant}]

English Dictionary: yodel	by the DICT Development Group
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Yodel \Yo"del\, Yodle \Yo"dle\, v. t. & i. [imp. & p. p.       {Yodeled}, {Yodled}; p. pr. & vb. n. {Yodeling}, {Yodling}.]       [G. jodeln.]       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.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Yodel \Yo"del\, Yodle \Yo"dle\, n.       A song sung by yodeling, as by the Swiss mountaineers.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Yodel \Yo"del\, Yodle \Yo"dle\, v. t. & i. [imp. & p. p.       {Yodeled}, {Yodled}; p. pr. & vb. n. {Yodeling}, {Yodling}.]       [G. jodeln.]       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.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Yodel \Yo"del\, Yodle \Yo"dle\, n.       A song sung by yodeling, as by the Swiss mountaineers.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Youthly \Youth"ly\, a. [AS. geogu[edh]lic.]       Young; youthful. [Obs.] [bd]All my youthly days.[b8]       --Spenser.