Cyclopean

Adjective.

1: often capitalized: of, relating to, or characteristic of a Cyclops.

2: huge, massive.

3: (/architecture//') of or relating to a style of stone construction marked typically by the use of large irregular blocks without mortar.

4: (/tg/) A word that, in the second sense above, it seems the Black Library requires every single author to include at least once in every single book they publish about the 40K universe.