Sentence:  The tip of the thing was equipped with long whiplike appendages that writhed around a loose, drooling, toothless mouth large enough to swallow a man whole...Perhaps this was the only thing that the escaping <WSD>Lovecraftian</WSD> entity had thus far been able to extrude between the opening Gates — this one finger. 
Meaning of the word marked with <WSD> tags:  Frighteningly monstrous and otherworldly, sometimes with terrifyingly unnatural anatomy.