The Collaborative International Dictionary of English v.0.48:

Gimmal \Gim"mal\, a.
   Made or consisting of interlocked rings or links; as, gimmal
   mail.
   [1913 Webster]

         In their pale dull mouths the gimmal bit
         Lies foul with chewed grass.             --Shak.
   [1913 Webster]

   Gimmal joint. See Gimbal joint, under Gimbal. Gimmer