idolum
noun
ido·lum
īˈdōləm
plural idola
-lə
1
: eidolon
2
: a form of false thinking : fallacy, idol sense 5
specifically : one of the four varieties of fallacy distinguished by Francis Bacon in his Novum Organum (1620) compare idols of the cave, idols of the forum, idols of the theater, idols of the tribe
Word History
Etymology
in sense 1, from Latin & Greek; Latin, phantom, image, from Greek eidōlon phantom, image, idol; in sense 2, New Latin, from Late Latin, idol, from Greek eidōlon