The Collaborative International Dictionary of English v.0.48:

Saddle \Sad"dle\, v. t. [imp. & p. p. Saddled; p. pr. & vb. n.
   Saddling.] [AS. sadelian.]
   1. To put a saddle upon; to equip (a beast) for riding.
      "saddle my horse." --Shak.
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            Abraham rose up early, . . . and saddled his ass.
                                                  --Gen. xxii.
                                                  3.
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   2. Hence: To fix as a charge or burden upon; to load; to
      encumber; as, to saddle a town with the expense of bridges
      and highways.
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