Source : Webster's Revised Unabridged Dictionary (1913)

Gibraltar \Gi*bral"tar\, n.
   1. A strongly fortified town on the south coast of Spain,
      held by the British since 1704; hence, an impregnable
      stronghold.

   2. A kind of candy sweetmeat, or a piece of it; -- called, in
      full, {Gibraltar rock}.

Source : WordNet®

Gibraltar
     n : location of a colony of the United Kingdom on a limestone
         promontory at the southern tip of Spain; strategically
         important because it can control the entrance of ships
         into the Mediterranean; one of the Pillars of Hercules
         [syn: {Rock of Gibraltar}, {Calpe}]