Definition of "Iblis"

beyond these mountains, Eblis and his accursed Dives hold their infernal empire.

1786, William Beckford, Vathek; an Arabian Tale

I do believe that Eblis hathA snare in ev’ry human path —

1829, Edgar Allan Poe, “Tamerlane”, in Al Aaraaf, Tamerlane and Minor Poems