What Exactly Is A Sankofite?

I was just reading a Stephen King short story by the name Everything’s Eventual and in it the word “sankofite” is mentioned. Now from reading the story it seems that it’s some sort of shape but I’m still not sure.

It’s just a word invented by King to name one of Dink’s death symbols. Since they’re never described in any detail, it’s pretty much up to you to decide what they are or what they look like.

And that answer seems to hold true with all the other words King used to describe Dink’s death symbols: japps; mirks;bews; smims; and rhomboids. Though rhomboid is actually a muscle of the upper back associated with the scapula and of diamond shape, with rhombus being any quad shape with four sides. Interesting stuff. King certainly has an active imagination that goes to the length to creating new words.

Close enough: http://en.wikipedia.org/wiki/Sankofa