Wunderkind \VOON-duhr-kint\ , noun;
(plural wunderkinder \VOON-duhr-kin-duhr\)
1. A child prodigy
2. One who achieves great success or acclaim at an early age
This word dates to 1891 and comes from German Wunderkind, which is literally "wonder-child". This term is most often used to refer to a prodigious child musician.
Today's word and the first definition were both taken from Dictionary.com's 'Word of the Day' for Wednesday, March 2
Etymologies come from the Oxford English Dictionary and/or Etymonline.com