Source : Webster's Revised Unabridged Dictionary (1913)

Cyclopean \Cy`clo*pe"an\ (s?`kl?-p?"an), a. [L. Cyclopeus, Gr.
   ?????, fr. ????? Cyclops: cf. F. cyclopeen.]
   Pertaining to the Cyclops; characteristic of the Cyclops;
   huge; gigantic; vast and rough; massive; as, Cyclopean
   labors; Cyclopean architecture.

Source : WordNet®

cyclopean
     adj : of or relating to or resembling the Cyclops; "Cyclopean eye"