Search Result for "food pyramid":
Wordnet 3.0

NOUN (1)

1. (ecology) a hierarchy of food chains with the principal predator at the top; each level preys on the level below; 



WordNet (r) 3.0 (2006):

food pyramid
    n 1: (ecology) a hierarchy of food chains with the principal
         predator at the top; each level preys on the level below