The Collaborative International Dictionary of English v.0.48:

Pal \Pal\, n. [Etymol. uncertain.]
   A mate; a partner; esp., an accomplice or confederate.
   [Slang]
   [1913 Webster]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006):

PAL
       Paradox Application Language (Borland, DB)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006):

PAL
       Privileged Architecture Library (DEC, Alpha)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006):

PAL
       Phase Alternating Line


V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006):

PAL
       Programmable Array Logic


Moby Thesaurus II by Grady Ward, 1.0:

75 Moby Thesaurus words for "pal":
   ace, amigo, associate, associate with, assort with, bedfellow,
   bedmate, bosom buddy, buddy, bunkie, bunkmate, butty, camarade,
   chamberfellow, chum, chum together, chum with, classmate, clique,
   clique with, club together, colleague, comate, companion, company,
   compeer, comrade, confrere, consociate, consort, consort with,
   copartner, crony, fellow, fellow student, fellowship,
   flock together, fraternize, girl friend, gossip, hang around with,
   hang out with, herd together, hobnob with, join,
   join in fellowship, keep company with, mate, messmate, mingle with,
   mix with, old crony, pal up with, pal with, pard, pardner, partner,
   playfellow, playmate, roommate, run, run in couples, run with,
   schoolfellow, schoolmate, shipmate, side partner, sidekick,
   sort with, take up with, teammate, tie up with, workfellow,
   yokefellow, yokemate