ScumOS /skuhm'os/ or /skuhm'O-S/ n. Unflattering hackerism for SunOS, the UNIX variant supported on Sun Microsystems's UNIX workstations (see also {sun-stools}), and compare {AIDX}, {Macintrash}, {Nominal Semidestructor}, {Open DeathTrap}, {HP-SUX}. Despite what this term might suggest, Sun was founded by hackers and still enjoys excellent relations with hackerdom; usage is more often in exasperation than outright loathing.