USL

from The Free On-line Dictionary of Computing (8 July 2008)
USL

   1. Query language, close to natural English.

   2. User System Language.  Bellcore, "Operations Technology
   Generic Requirements: User System Interface", TR-825.

   3. Unix System Laboratories: the software subsidiary of
   {AT&T}, responsible for {Unix} {System V} and related
   software.
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
USL
       Unix Systems Laboratories (AT&T, Unix)
antiflux / dictionary / USL
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