Clog almanac
| a primitive kind of almanac or calendar, formerly used in England, made by cutting notches and figures on the four edges of a clog, or square piece of wood, brass, or bone; - called also a Runic staff, from the Runic characters used in the numerical notation. |
See also: Clog
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.