A notebook on magical lore and magical information including wordcrafting, spells, curses, and hexes, ritual procedures, magical properties of herbs, stones, and other natural objects, and other related information. The term comes from the English term grammar.

Traditionally, witches did not keep a written account of their knowledge. Many could not write. Those who could write, didn't write down information about witchcraft because it could be discovered and used as evidence in a court of law, and get the witch killed or imprisoned.