RIDEAU
Ri*deau", n. Etym: [F.]
Defn: A small mound of earth; ground slightly elevated; a small ridge.
RIDEN
Rid"en, obs.
Defn: imp. pl. & p. p. of Ride. Chaucer.
RIDENT
Ri"dent, a. Etym: [L. ridens, p. pr. of ridere to laugh.]
Defn: Laughing. [R.] Thackeray.
RIDER
Rid"er, n.
1. One who, or that which, rides.
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.