Indeed. I was reluctant to try it as I felt that an American literary type was unlikely to use a technical term associated with grinding wheels. I suspect it is an Americanism of arbour, a leafy glade or somesuch. Moving on to today 4/6
There is no American literary type involved. The author of Wordle is a Brit. Shame on him for using such words.
I believe it is edited by a lady member of the New York Times. Edit - Tracy Bennett. No wonder it has so many double letters!!