1) French word used in English 2) Manual 
A grimoire ɑr is a textbook of magic. Such books typically include instructions on how to create magical objects like talismans and amulets, how to perform magical spells, charms and divination and also how to summon or invoke supernatural entities such as angels, spirits, and demons. In many cases, the books themselves are also believed to be im...
magician's book for summoning spirits
[n] - a manual of black magic (for invoking spirits and demons)
noun a manual of black magic (for invoking spirits and demons)