Main Entry: Her·cu·le·an

Pronunciation: \ˌhər-kyə-ˈlē-ən, ˌhər-ˈkyü-lē-\

Function: adjective

Date: 1513

1 : of, relating to, or characteristic of Hercules
2 often not capitalized : of extraordinary power, extent, intensity, or difficulty <Herculean tasks> <Herculean proportions>