厘 means “rin, one thousandth”

りん · rin

Also: 1/10 sen, 1/10 bu

On'yomi (Chinese reading)
リン

JLPT N1 · Taught in secondary school · 9 strokes

The story

A village (里) under a cliff (厂): picture the smallest coin in a poor hamlet. 厘 is a thousandth: once a tenth of a sen, now the last digit of batting averages, where .325 is read 3割2分5厘, and 九分九厘 is 99 percent sure.

Used in 九分九厘 (kubukurin, ninety-nine percent/almost certainly), 一分一厘 (ichibuichirin, the slightest bit), and 厘 (rin, one thousandth)

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.