So, does anyone know what the first such "farm" slang term was, and when and where it originated? And how about other terms with "farm" in them? (I came across a new one the other day, but of course I've forgotten it now.)
Going back a ways, it originated with growing crops. Then, it began being used for some other agricultural uses, such as a "pig farm".
Later, it began to be used for moderately open land, with collections of other stuff, such as a group of windmills became a "wind farm" (Altamont pass).
From there, it evolved into collections of anything, such as "server
farm", and even "cube farm".