V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PCL
       Portable Common LOOPS (CLOS)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PCL
       Printer Control Language (HP, PJL)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PCL
       Programmable Command Language (CMU, DEC, TOPS)


The Free On-line Dictionary of Computing (30 December 2018):

PCL

   1. Printer Control Language.  A Document description
   language used by Hewlett-Packard Laserjet printers, a
   superset of HP-GL/2.

   [PCL 5 Printer Language Printer Technical Reference Manual, HP
   33459-90903.  Versions: PCL 3, PCL 5].

   2. Portable CommonLoops.

   3. Peripheral Conversion Language.  A Honeywell command
   language for file transfer between I/O devices on the CP-V
   and CP-6 operating systems.

   4. ["PCL - A Process Oriented Job Control Language", V. Lesser
   et al, Proc 1st Intl Conf Distrib Comp Sys, IEEE 1979,
   pp.315-329].