Source : Webster's Revised Unabridged Dictionary (1913)

Winnebagoes \Win`ne*ba"goes\, n.; sing. {Winnebago}. (Ethnol.)
   A tribe of North American Indians who originally occupied the
   region about Green Bay, Lake Michigan, but were driven back
   from the lake and nearly exterminated in 1640 by the
   IIlinnois.