What does "escurial" mean?

Escurial: A palace and mausoleum of the kinds of Spain, being a vast and wonderful structure about twenty-five miles northwest of Madrid. Note: The ground plan is said to be in the form of a gridiron, the structure being designed in honor of St. Lawrence, who suffered martyrdom by being broiled on gridiron; but the resemblance is very slight. It is nearly square, inclosing several courts, and has a projecting mass which stands for the handle.