spoonflower

from WordNet (r) 3.0 (2006)

spoonflower
    n 1: tropical American aroid having edible tubers that are
         cooked and eaten like yams or potatoes [syn: {yautia},
         {tannia}, {spoonflower}, {malanga}, {Xanthosoma
         sagittifolium}, {Xanthosoma atrovirens}]

from The Collaborative International Dictionary of English v.0.48

Spoonflower \Spoon"flow`er\ (-flou`[~e]r), n.
   The yautia.
   [Webster 1913 Suppl.]