:link farm: [UNIX] n. A directory tree that contains many links to
files in a master directory tree of files. Link farms save space
when one is maintaining several nearly identical copies of the same
source tree --- for example, when the only difference is
architecture-dependent object files. "Let's freeze the source and
then rebuild the FROBOZZ-3 and FROBOZZ-4 link farms." Link farms
may also be used to get around restrictions on the number of
`-I' (include-file directory) arguments on older
C preprocessors. However, they can also get completely out of
hand, becoming the filesystem equivalent of {spaghetti
code}.
-- The AI Hackers Dictionary