Tanım
•a hundred to one, a near certainty
Etimoloji
Literally, “Nine bu and nine rin”, with bu referring to ¹⁄₁₀ and rin to ¹⁄₁₀₀. Since 1 bu is 10 rin, the total 9 bu and 9 rin is equivalent to 99 rin, which here is contrasted against the remaining ¹⁄₁₀₀ (or 1 rin).