orrery
A clockwork model of any given solar system.
In the mean time I have another trouble to give you, if you will oblige me in it; and that is to get me a sight of the famous Orrery, which I have heard you and others so often speak of; and which I think was made by Mr. Rowley, the famous Mathematical Instrument-Maker.
A conceptual model of someone's worldview.
figuratively
Where it comes from
Named after Charles Boyle, 4th Earl of Orrery (1676–1731), for whom such a device was made. The placename is from Irish Orbhraighe, originally the name of a tribe (Orbh-raighe (“Orb's people”)), and then of a territory and a barony.
Adapted from the Wiktionary entry orrery (CC BY-SA 4.0).