The Collaborative International Dictionary of English v.0.48:

Saddlery \Sad"dler*y\, n.
   1. The materials for making saddles and harnesses; the
      articles usually offered for sale in a saddler's shop.
      [1913 Webster]

   2. The trade or employment of a saddler.
      [1913 Webster]

WordNet (r) 3.0 (2006):

saddlery
    n 1: gear for a horse [syn: stable gear, saddlery, tack]
    2: workshop where a saddler works