Gyr
Bosworth & Toller Anglo-Saxon Old English Dictionary - gyr
According to the Old English Dictionary:
gyra;
- gyr
- m. gyru; f. Mud, fen, marsh :-- Gyr lætamen, Hpt. Gl. 516. On gyran torr[?], Cod. Dipl. Kmbl. iii. 412, 8. Gyrwe fenn palus, Ælfc. Gr. 9, 33; Som. 12, 29. Gyran, gyras paludes, Lye. [Cf. O. Frs. cere, gere dirty water.]