Yours, Etc.: Origins and Uses of 8 Sign-Offs
1859, slang shortening of public house (see public (adj.)), which originally meant "any building open to the public" (1570s), then "inn that provides food and is licensed to sell ale, wine, and spirits" (1660s), and finally "tavern" (1768). Pub crawl first attested 1910 in British slang.
A saloon; bar; tavern: a round of Long Island pubs
[1859+ British; fr British public, fr public house]
Publicity: You know Dallas is going to get all that pub (1990s+)
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.