Where does “outlot” come from?

outlot (English) comes from English Lot, from French Lot, from Middle French lot, from Old French loz, from Frankish lot, from Proto-Germanic hlutą, from Proto-Indo-European ḱlew-, from Proto-Indo-European ḱel- — to cover; to incline.

outlot (English): A plot of undeveloped land, sometimes without access to public roads, designated by a developer on a plat for future construction or noted for its unsuitability to be designated a full lot