'Herculean' definitions:

Definition of 'herculean'

From: WordNet
adjective
Displaying superhuman strength or power; "herculean exertions" [syn: herculean, powerful]
adjective
Extremely difficult; requiring the strength of a Hercules; "a herculean task"

Definition of 'Herculean'

From: GCIDE
  • Herculean \Her*cu"le*an\, a. [L. herculeus, fr. Hercules: cf. F. hercul['e]en. See Hercules.] [1913 Webster]
  • 1. Requiring the strength of Hercules; hence, very great, difficult, or dangerous; as, an Herculean task. [1913 Webster]
  • 2. Having extraordinary strength or size; as, Herculean limbs. "Herculean Samson." --Milton. [1913 Webster]