资料来源 : Webster's Revised Unabridged Dictionary (1913)

Ryder \Ry"der\, n.
   1. A clause added to a document; a rider. See {Rider}. [Obs.]

   2. [D. rijder, properly, a rider.] A gold coin of Zealand
      [Netherlands] equal to 14 florins, about $ 5.60.