D defs.my
Entry 2 senses Webster, 1913

Herculean

/hẽrk-yo͞ol'-ē-ən/ · Her·cu·le·an · IPA /hɜːɹˈkjuːliən/
01 a. Requiring the strength of Hercules; hence, very great, difficult, or dangerous; as, an Herculean task.
  1. 1.
    Requiring the strength of Hercules; hence, very great, difficult, or dangerous; as, an Herculean task.
  2. 2.
    Having extraordinary strength or size; as, Herculean limbs.