hydra -
trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality; "we may be facing a hydra that defies any easy solution"
Hydra -
a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer
hydra -
A complex, multifarious problem or situation that cannot be solved easily and rapidly.
Wikipedia
HYDRA is a fictional terrorist organization in the Marvel Universe. Despite the name's capitalization per Marvel's official spelling, the name is not an acronym but rather a reference to the mythical Lernaean Hydra. The organization's motto references the myth of the Hydra, proclaiming that if a head is cut off, two more will take its place, proclaiming their resilience and growing strength in the face of resistance.
