Boyd’s Bible Dictionary:
(nothingness). (1) An unidentified plain (Amos 1:5). (2) Beth-aven, or Bethel (Hos. 10:8). (3) Heliopolis or city of On (Ezek. 30:17).
Concise Bible Dictionary:
1. On, or Heliopolis, “House of the Sun,” in northern Egypt, a seat of idolatry: its young men should fall by the sword (Ezek. 30:17). See ON.
2. Used symbolically in that Beth-el,” the house of God,” had become Aven or Beth-aven, that is, “the house of vanity” because of idolatry (Hos. 10:8; compare Hos. 4:15; Hos. 5:8; Hos. 10:5).
3. The Plain of Aven, a place in Syria (Amos 1:5). Not identified.
Strong’s Dictionary of Hebrew Words:
Meaning:
the same as 205; idolatry; Aven, the contemptuous synonym of three places, one in Coele-Syria, one in Egypt (On), and one in Palestine (Bethel)
Jackson’s Dictionary of Scripture Proper Names:
perverseness
Potts’ Bible Proper Names:
Vanity; iniquity; idolatry:―the name of three places, Ezek. 30:17. {Vanitas}