Her*cu"le*an (?), a. [L. herculeus, fr. Hercules: cf. F. hercul'een. See Hercules.]
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.
© Webster 1913.