2. Formerly, an agent who went out with samples of goods to
obtain orders; a commercial traveler. [Eng.]
3. One who breaks or manages a horse. --Shak.
4. An addition or amendment to a manuscript or other
document, which is attached on a separate piece of paper;
in legislative practice, an additional clause annexed to a
bill while in course of passage; something extra or
burdensome that is imposed.
After the third reading, a foolish man stood up to
propose a rider. --Macaulay.
This [question] was a rider which Mab found
difficult to answer. --A. S. Hardy.
5. (Math.) A problem of more than usual difficulty added to
another on an examination paper.
6. [D. rijder.] A Dutch gold coin having the figure of a man
on horseback stamped upon it.
His moldy money ! half a dozen riders. --J.
Fletcher.
7. (Mining) Rock material in a vein of ore, dividing it.
8. (Shipbuilding) An interior rib occasionally fixed in a
ship's hold, reaching from the keelson to the beams of the
lower deck, to strengthen her frame. --Totten.
9. (Naut.) The second tier of casks in a vessel's hold.
10. A small forked weight which straddles the beam of a
balance, along which it can be moved in the manner of the
weight on a steelyard.
11. A robber. [Obs. or Prov. Eng.] --Drummond.
{Rider's bone} (Med.), a bony deposit in the muscles of the
upper and inner part of the thigh, due to the pressure and
irritation caused by the saddle in riding.