Wordnet 3.0
NOUN (1)
1. 
 order of chiefly tropical marsh-dwelling fish-eating wading birds with long legs and bills and (except for flamingos) unwebbed feet: herons; 
 storks; 
 spoonbills; 
 flamingos; 
 ibises; 
[syn: Ciconiiformes, order Ciconiiformes]
WordNet (r) 3.0 (2006):
order Ciconiiformes
    n 1: order of chiefly tropical marsh-dwelling fish-eating wading
         birds with long legs and bills and (except for flamingos)
         unwebbed feet: herons; storks; spoonbills; flamingos;
         ibises [syn: Ciconiiformes, order Ciconiiformes]