Source : Webster's Revised Unabridged Dictionary (1913)

Jockey \Jock"ey\, v. t. [imp. & p. p. {Jockeyed}; p. pr. & vb.
   n. {Jockeying}.]
   1. `` To jostle by riding against one.'' --Johnson.

   2. To play the jockey toward; to cheat; to trick; to impose
      upon in trade; as, to jockey a customer.