Strong’s Dictionary of Hebrew Words:

from 3559; properly, a statue, i.e. idol; but used (by euphemism) for some heathen deity (perhaps corresponding to Priapus or Baal-peor)
KJV Usage:

Jackson’s Dictionary of Scripture Proper Names:

an image: pillar (as set up)

Potts’ Bible Proper Names:

Statue; image:―an Israelite idol; [REMPHAN], Amos 5:26. {Simulacrum}

From Manners and Customs of the Bible:

2. The majority of those interpreters who suppose Chiun to be a proper name take it to mean the planet Saturn. The Septuagint has ‘Pαιφάν, which afterward became corrupted to ‘Pευφάν, and is so used by Stephen in Acts 7:4343Yea, ye took up the tabernacle of Moloch, and the star of your god Remphan, figures which ye made to worship them: and I will carry you away beyond Babylon. (Acts 7:43). Some have assumed that ‘Pαιφάν, was an Egyptian name of the planet Saturn, but others have denied this. Some commentators suppose that the word is not a proper name, but merely signifies a statue, an idol, or a pedestal on which an idol might be placed.

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