[1] : The Collaborative International Dictionary of English v.0.48

gantlet \gant"let\, n. gantlet is corrupted fr. gantlope;
   gantlope is for gatelope, sw. gatlopp, orig., a running down
   a lane; gata street, lane + lopp course, career, akin to
   l"opa to run. see gate a way, and leap.
   a military punishment formerly in use, wherein the offender
   was made to run between two files of men facing one another,
   who struck him as he passed.
   1913 webster

   to run the gantlet, to suffer the punishment of the
      gantlet; hence, to go through the ordeal of severe
      criticism or controversy, or ill-treatment at many hands.
      1913 webster

            winthrop ran the gantlet of daily slights.
                                                  --palfrey.
      1913 webster

   note: written also, but less properly, gauntlet.
         1913 webster
see also:
gate leap to run the gantlet 

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