It's a word based on the word "Sakro" which in Esperanto means "The Holy Bone" (Anatomy). Basically, there is no direct translation. Sacry would be translated into "the thing that scares sb 'tll the bones"
It's mostly used by Mexicans and Greeks.
Juana: Oh you won't believe it, I was about to enter my house when I heard a really sacry noise coming out of it. I was mortified!