The Wikipedia discussion of that example is interesting. I stuck with "raced" as a verb, with the horse passing an upland moor called barn. (Barn, as the name of a fell, probably being a corruption of an old word for bear (the animal).)

The Wikipedia interpretation makes the sentence clumsy and somewhat nonsensical (in real world terms: a horse having been raced beside a barn (farm building)? That is unlikely unless the barn is extremely long as barns go, which is also unlikely).

The curse of a large vocabulary: you often misinterpret what people say, especially when you don't have both a good theory of mind for the speaker, and the context.