pneumatophore

from 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
    
from 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]
    

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