I'm reading The Round House by Louise Erdrich. I've came across to this expression and I know it normally is a racial slur about white people. The book is about Native Americans and the term is used by one, but I feel like the author meant a whole different thing and used it for an object rather than a person. He says people sit and gape at this round white cracker. Is it the sacrament? For context, the tribe is Ojibwa and the narrator is in the hospital with his parents and calls his aunt and her husband to let them know but they won't answer. Here is the paragraph it's in:
But there was no answer. So I knew my aunt had taken Edward up to adore the sacrament, which got them out of the house on Sunday nights. He said that while Clemence adored the sacrament, he meditated on how it could be possible that humans had evolved out of apes only to sit gaping at a round white cracker. Uncle Edward was a science teacher.