Aven - (Easton's Bible Dictionary)
Nothingness; vanity. (1.) Hosea speaks of the "high places of Aven" (10:8), by which he means Bethel. He also calls it Beth-aven, i.e., "the house of vanity" (4:15), on account of the golden calves Jeroboam had set up there (1 Kings 12:28).
(2.) Translated by the LXX. "On" in Ezek. 30:17. The Egyptian Heliopolis or city of On (q.v.).
(3.) In Amos 1:5 it denotes the Syrian Heliopolis, the modern Baalbec.