A Veve or Vévé (also spelled beybey and vever) is a religious symbol commonly used in Haitian Vodou.
The veves represent figures of the astral
forces... In the course of Voodoo ceremonies, the reproduction of the
astral forces represented by the veves obliges the loas... to descend to
earth.
Every Loa has his or her own unique veve, although regional
differences have led to different veves for the same loa in some cases.
Sacrifices and offerings are usually placed upon them, with food and
drink being most commonly used in the West.
The ritual diagram are also magic.
Veve of Maman Brigitte.
Maman Brigitte is a death loa, the wife of Baron Samedi.
Maman Brigitte is one of the few Loa who is white and is depicted as
being fair-haired and green-eyed with light European skin. She protects gravestones in cemeteries if they are properly marked with a cross.