Source : Webster's Revised Unabridged Dictionary (1913)

Wahoo \Wa*hoo"\, n.
   Any of various American trees or shrubs; specif.:
   (a) A certain shrub ({Evonymus atropurpureus}) having purple
       capsules which in dehiscence expose the scarlet-ariled
       seeds; -- called also {burning bush}.
   (b) Cascara buckthorn.
   (c) Basswood.