gold wheel
Buddhist cosmology: the highest of the three layered wheels that support the earth above the primordial void. A technical term.
In Buddhist cosmology, the earth is said to be supported on the gold wheel.
金輪 is sometimes used as an abbreviation for 金輪王.
golden-wheel-turning sage king
to the utmost limits; to the bitter end; down to the bedrock
From Buddhist terminology, combining 金 (gold) and 輪 (wheel). The exact historical derivation is uncertain.