hydras
noun(hy-dra)
a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer
hydras
noun(hy-dra)
(Greek mythology) monster with nine heads; when struck off each head was replaced by two new ones
hydras
noun(hy-dra)
small tubular solitary freshwater hydrozoan polyp
hydras
noun(hy-dra)
trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality
Examples:
We may be facing a hydra that defies any easy solution.