KanjiJLPT N1
Measurement

measurement, tenth of a shaku, a little, small

Mnemonic

A horizontal with a short vertical and a dot — a precise tool for doing measurements.

Details

The keyword for 寸 is measurement. This kanji originally referred to a traditional unit of length in East Asia, approximately one inch or about 3.03 centimeters. Over time, it came to represent the broader concept of measurement or a small, precise amount. It often conveys the idea of something very short or slight in extent, emphasizing precision and minuteness.
On'yomi
すん