French Place Name

[hiflier]

In Brittany, France, many place names inckude the words 'La Grée' or 'Les Grées'. I cannot find a translation of this word which must be obsolete or archaic French, probably alluding to a geographical or physical feature. Can anyone provide me with an explanation of it?

[Buenchico]

Perhaps 'a stony place'?
https://www.ancestry.com/name-origin?surname=lagree

[atalanta]

It may suggest a geographical feature like sandstone or gravel.