adj.
Pronunciation: ˌ h ə r-ky ə - ' l ē - ə n, ˌ h ə r- ' kyü-l ē -
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>