Mr. Darcy may perhaps have heard of such a place as Gracechurch Street, but he would hardly think a month’s ablution enough to cleanse him from its impurities, were he once to enter it; and depend upon it, Mr. Bingley never stirs without him."
There are no more uses of "ablution" in the book.
Show samples from other sources
"Home for nineteen hours and you’ve already indulged your predilection for ablutionary excesses, hah!
Harper Lee -- Go Set a Watchman
He told people the correct way to do their ablutions for prayers—which body part to wash first.