[1] : The Collaborative International Dictionary of English v.0.48

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.
   1913 webster yodel
see also:
yodeled yodled yodeling yodling 

[2] : The Collaborative International Dictionary of English v.0.48

yodel \yo"del\, yodle \yo"dle\, n.
   a song sung by yodeling, as by the swiss mountaineers.
   1913 webster

[3] : WordNet (r) 2.0

yodel
     n : a songlike cry in which the voice fluctuates rapidly between
         the normal voice and falsetto
     v : sing by changing register; sing by yodeling; "the austrians
         were yodeling in the mountains" syn: warble, descant
     also: yodelling, yodelled
see also:
warble descant yodelling yodelled 

[4] : Moby Thesaurus II by Grady Ward, 1.0

59 moby thesaurus words for "yodel":
   anthem, ballad, bel canto, bravura, carol, chant, chirp, chirrup,
   choir, choral singing, chorus, coloratura, croon, crooning,
   descant, do-re-mi, folk singing, hum, humming, hymn, intonate,
   intonation, intone, lilt, lyricism, minstrel, operatic singing,
   pipe, psalm, quaver, roulade, scat, scat singing, serenade, shake,
   sing, sing in chorus, singing, sol-fa, sol-fa exercise, solfeggio,
   solmizate, solmization, song, tonic sol-fa, tremolo, trill, troll,
   tweedle, tweedledee, twit, twitter, vocal music, vocalization,
   vocalize, warble, warbling, whistle, yodeling

Yodel >> Y Words
Yodel, definition of term: Yodel
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