'Ivory' in the Bible

I will ruin the winter house as well as the summer house, and the houses of ivory will perish and the great houses shall come to an end," {declares} Yahweh.

[Alas for] those who lie on beds of ivory and lounge on their couches, and those eating young rams from [the] sheep and goats, and bull-calves from the middle of [the] animal stall.