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Webster 1913 Edition
Yodle
{ 
Yo′del
,Yo′dle
, }Verb.
 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. 
  { 
, Yo′del
,Yo′dle
}Noun.
 A song sung by yodeling, as by the Swiss mountaineers.