Herculean
Pronunciation : Her*cu"le*an
Part of Speech : a.
Etymology : [L. herculeus, fr. Hercules: cf. F. hercul?en. See Hercules.]
Definition : 1. Requiring the strength of Hercules; hence, very great, difficult, or dangerous; as, an Herculean task.
2. Having extraordinary strength or size; as, Herculean limbs. "Herculean Samson." Milton.
Source : Webster's Unabridged Dictionary, 1913