The Collaborative International Dictionary of English v.0.48:

Farrier \Far"ri*er\, v. i.
   To practice as a farrier; to carry on the trade of a farrier.
   [Obs.] --Mortimer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Farrier \Far"ri*er\, n. [OE. farrour, ferrer, OF. ferreor,
   ferrier, LL. Ferrator, ferrarius equorum, from ferrare to
   shoe a horse, ferrum a horseshoe, fr. L. ferrum iron. Cf.
   Ferreous.]
   1. A shoer of horses; a veterinary surgeon.
      [1913 Webster]

WordNet (r) 3.0 (2006):

farrier
    n 1: a person who shoes horses [syn: farrier, horseshoer]