cruft

/kruhft/ [very common; back-formation from crufty ] 1. n. An unpleasant
substance. The dust that gathers under your bed is cruft; the TMRC
Dictionary correctly noted that attacking it with a broom only produces
more. 2. n. The results of shoddy construction. 3. vt. [from hand cruft ,
pun on hand craft ] To write assembler code for something normally (and
better) done by a compiler (see hand-hacking ). 4. n. Excess; superfluous
junk; used esp. of redundant or superseded code. 5. [University of
Wisconsin] n. Cruft is to hackers as gaggle is to geese; that is, at UW one
properly says a cruft of hackers.