(adj) :
very
strong, similar to the mythical
Hercules in size; said of something that will take a huge amount of
work -- a Herculean labour, a Herculean task
"1607: But this is not the best:--look, pr'ythee, Charmian, / How this Herculean Roman does become / The carriage of his chafe. --
Shakespeare, , i 3"