RIDER

rider. Rider, n. one who rides a horse, a horse, timber

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Rid″er (rīd″ẽr), n. 1. 1. One who, or that which, rides.
2. 2. Formerly, an agent who went out with samples of goods to obtain orders; a commercial traveler.
3. 3. One who breaks or manages a horse. Shak.
4. 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 was a rider which Mab found difficult to answer. A. S. Hardy. 5. 5. (Math.) A problem of more than usual difficulty added to another on an examination paper.
6. 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. 7. (Mining) Rock material in a vein of ore, dividing it.
8. 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. 9. (Naut.) The second tier of casks in a vessel's hold.
10. 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. 11. A robber. 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.