Search Result for "pneumatophore": 
Wordnet 3.0

NOUN (1)

1. an air-filled root (submerged or exposed) that can function as a respiratory organ of a marsh or swamp plant; 



The Collaborative International Dictionary of English v.0.48:

Pneumatophore \Pneu*mat"o*phore\, n. [Pneumato- + Gr. fe`rein to
   bear.] (Zool.)
   One of the Pneumonophora.
   [1913 Webster]


WordNet (r) 3.0 (2006):

pneumatophore
    n 1: an air-filled root (submerged or exposed) that can function
         as a respiratory organ of a marsh or swamp plant