Webster's Unabridged Dictionary - Letter R - Page 90
Rynd (n.) A piece of iron crossing the hole in the upper millstone by which the stone is supported on the spindle.
Ryot (n.) A peasant or cultivator of the soil. [India]
The Indian ryot and the Egyptian fellah work for less pay than any other laborers in the world. -- The Nation.
Rypophagous (a.) (Zool.) Eating, or subsisting on, filth.
Rys (n.) A branch. [Obs.] -- Chaucer.
Rysh (n.) Rush, a plant. [Obs.] -- Chaucer.
Rysimeter (n.) See Rhysimeter.
Ryth (n.) A ford. [Obs.]
Rytina (n.) (Zool.) A genus of large edentulous sirenians, allied to the dugong and manatee, including but one species ({Rytina Stelleri); -- called also Steller's sea cow, stellerine and steller. [Written also Rhytina.]
Note: It is now extinct, but was formerly abundant at Bering's Island, near Bering's Straits. It was twenty-five feet or more in length, with a thick, blackish, naked skin. The last were killed in 1768 for their oil and flesh.