The Collaborative International Dictionary of English v.0.48:

Coontie \Coon"tie\, n. (Bot.)
   A cycadaceous plant of Florida and the West Indies, the
   Zamia integrifolia, from the stems of which a kind of sago
   is prepared.
   [1913 Webster]

WordNet (r) 3.0 (2006):

coontie
    n 1: small tough woody zamia of Florida and West Indies and
         Cuba; roots and half-buried stems yield an arrowroot [syn:
         coontie, Florida arrowroot, Seminole bread, Zamia
         pumila]