Dracunculus \Dra*cun"cu*lus\, n.; pl. Dracunculi. [L., dim. of draco dragon.]

(Zool.)
   (a) A fish; the dragonet.
   (b) The Guinea worm (Filaria medinensis). [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Dracunculus

Source: WordNet (r) 2.0
 

Dracunculus \Dra*cun"cu*lus\, n.; pl. Dracunculi. [L., dim. of draco dragon.]

(Zo["o]l.)
   (a) A fish; the dragonet.
   (b) The Guinea worm (Filaria medinensis).

Source: Webster's Revised Unabridged Dictionary (1913)