Meanwhile the day had become much lighter; part of the endless, grey-black building on the other side of the street - which was a hospital - could be seen quite clearly with the austere and regular line of windows piercing its facade;
There are no more uses of "austere" in the book.
Show samples from other sources
He took a vow of silence and leads an austere life at the monastery.
While most kids are partying at college, she practiced austerity during her college years.