Definition of "Beelzebub"

Beelzebub

/biːˈɛlzɪbʌb/

proper noun
1. (biblical) A Canaanite deity worshipped at Ekron.
  Quotations
  But when the Phariſees heard it, they ſaid, This fellow doeth not caſt out deuils, but by Beelzebub the prince of the deuils.
  1611, The Holy Bible, […] (King James Version), London: […] Robert Barker, […], Matthew 12:24, column 1
2. (Christianity) Satan, the Devil.
  Quotations
  Mamma mia, let me go / Beelzebub has a devil put aside for me, for me, for me!
  1975, Freddie Mercury (lyrics and music), “Bohemian Rhapsody”, in A Night at the Opera, performed by Queen