hwyrft, m.n: turn, revolution, going, course, orbit, circuit, orb, circle. (“hwurft”)
Image: “A typical medieval theological and astronomical figuration: two angels trigger cranks designed to rotate the first mobile sky. Provencal manuscript of the fourteenth century. British Museum, London.” From Robert Lopez’s The birth of Europe (1965), p. 355. Found in Ricardo da Costa’s blog post on the medieval cosmos.