Boyd’s Bible Dictionary:
(apparent). An object of worship, other than God (Gen. 31:19); idolatry forbidden (Ex. 20:3-4; 34:13; Deut. 4:16-19; 7:25-26); yet existed largely, especially under the judges and later kings (Ex. 32; Judg. 2:10-23; 1 Kings 11:33; 12:27-33; 14:22-24; Isa. 57:5-8).
Strong’s Dictionary of Greek Words:
Meaning:
from 1491; an image (i.e. for worship); by implication, a heathen god, or (plural) the worship of such