1. PUBlishing. A 1972 text-formatting language for TOPS-10, with syntax based on SAIL. Influenced TeX and Scribe. ["PUB: The Document Compiler", Larry Tesler, Stanford AI Proj Op Note, Sept 1972].
2. /pub, the top-level, publicly accessible directory on most anonymous FTP archives. This is usually where the interesting files are. See pubic directory.