There is no sound etymology for this word, which appears only in Portuguese, Spanish, Catalan, and Galician (other romance languages use words derived from Latin strix, -igis, originally an owl). The word may be inherited from a Celtiberian substrate or it may derive from the Latin plusscius, -a, um (> plus + scius), a hapax attested in the Cena Trimalchionis, a central part in Petronius' Satyricon.Pluscia could have arisen from rhotacization of the /l/ and voicing of the /p/, pluscia> pruscia> bruscia> bruxa (Portuguese)> bruja (Spanish).
In the television series Constantine, the Brujería are revealed to be the series antagonists. They are depicted as ancient magical creatures cursed by God and rejected by Hell who were thought to have been destroyed by the Great Flood but have survived in hiding.
In the crime novel "The Wrong Side of Goodbye" by Michael Connelly, a character describes "an impromptu 'marriage' on the beach officiated by an artist friend who was ordained in a cult-like Mexican religion called brujería."
Azealia Banks released a series of videos on Instagram showing her cleaning up the remains of sacrificed chickens, claiming to be practicing brujería.