hydra, n.
(hydrae, hydras)
(hydrae, hydras)
small tubular solitary freshwater hydrozoan polyp
<noun.animal>
hydra
trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality
<noun.cognition>
hydra
sample sentences
"we may be facing a hydra that defies any easy solution"
semantic pointers
hypernym