The Grimoire is a book of spells used by white witches seen in the film.
A grimoire 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.
While the term grimoire is originally European and many Europeans throughout history, particularly ceremonial magicians and cunning folk, have made use of grimoires, the historian Owen Davies noted that similar such books can be found all across the world, ranging from Jamaica to Sumatra,and he also noted that the first such grimoires could be found not in Europe but in the Ancient Near East.
In Pop Culture
The term grimoire commonly serves as an alternative name for a spell book or tome of magical knowledge in fantasy fiction and role-playing games. The most famous fictional grimoire is the Necronomicon, a creation of H. P. Lovecraft.
In the film The Sorcerer this type of book was called the 'Incantus'. In the television series Charmed an equivalent is called the Book of Shadows.
The central book of spells in the Disney animated fantasy adventure series Gargoyles, the Grimorum Arcanorum, is an ancient book of magic used by Demona and David Xanatos in various schemes throughout the series' storyline.
In the video game Nier, one of the main characters is a talking grimoire who is usually referred to as Weiss, despite his protests that his companions should use his full title, Grimoire Weiss
Hansel & Gretel: Witch Hunters
The book was given to Mina by Hansel. He found it in his house. It was once used by the Adrianna, the most powerful white witch of all. Ben had known the name of the Grimoire. A page of it was used to bless a potion that made them enter the witch's lair and the surrounding woods.