/tops-ten/ DEC's proprietary OS for the fabled PDP-10 machines, long a favourite of hackers but now effectively extinct. A fountain of hacker folklore. See also ITS, TOPS-20, TWENEX, VMS, operating system. TOPS-10 was sometimes called BOTS-10 (from "bottoms-ten") as a comment on the inappropriateness of describing it as the top of anything.
Try this search on Wikipedia, OneLook, Google
Nearby terms: topic thread « top-level domain « topology « TOPS-10 » TOPS-20 » Tornado » Toronto Euclid