“Beelzebul.” The Greek is Beelzeboul (#954 Βεελζεβούλ), which gets put into English as “Beelzebul.” “Beelzeboul” is “lord of the dunghill.” This comes from the Hebrew zebul (dung, a dunghill).
[For more on the name Beelzebul and other names of the Slanderer (the Devil), see Appendix 14: “Names of the Devil.”]