A *bug* or design error that limits a program's
capabilities, and which is sufficiently egregious that nobody can quite
work up enough nerve to describe it as a *feature*.
Often used (esp. by *marketroid* types) to make it
sound as though some crippling bogosity had been intended by the designers
all along, or was forced upon them by arcane technical constraints of a
nature no mere user could possibly comprehend (these claims are almost
invariably false).

Old-time hacker Joseph M. Newcomer advises that whenever choosing a
quantifiable but arbitrary restriction, you should make it either a power
of 2 or a power of 2 minus 1. If you impose a limit of 107 items in a
list, everyone will know it is a random number — on the other hand, a
limit of 15 or 16 suggests some deep reason (involving 0- or 1-based
indexing in binary) and you will get less *flamage*
for it. Limits which are round numbers in base 10 are always especially
suspect.