Sigil

Sigil: Sigil (usually used in occult/mystical contexts) simply means seal or sign. Sigil shares its etymology with many words: sign, seal, tocsin, assign, consign, signal, signify, and insignia.

Abruptly, Mal'akh drew his gaze downward, past the double-headed phoenix on his chest, past the collage of ancient sigils adorning his face, and directly to the top of his head.

A Word for Today: The Lost Symbol by Dan Brown