The Collaborative International Dictionary of English v.0.48:

Yorkshire \York"shire\, n.
   A county in the north of England.
   [1913 Webster]

   Yorkshire grit, a kind of stone used for polishing marble,
      and copperplates for engravers. --Simmonds.

   Yorkshire pudding, a batter pudding baked under meat.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Yorkshire pudding
    n 1: light puffy bread made of a puff batter and traditionally
         baked in the pan with roast beef