the world > space > relative position > condition of being external > covering > cover [verb (transitive)] > partially (5)
intransitive. to lap on to (also over, upon) (something): to lie upon, so as to cover partially; also, to lie upon and project over, overlap.
transitive. To lie or be situated so as to extend over part of (a thing); to overlie (something) partially. Also figurative: to coincide partly with.
To cover like a shingled roof. U.S.