いっすん 一寸 LinksSentence search for 一寸Sentence search for いっすんKanji details for 一 and 寸Edit in JMdict Noun1. one sun (approx. 3 cm)See also 寸Noun, Adverb (fukushi)2. little bit (of time, distance, etc.)いっすん一寸のむし虫にもごぶ五分のたましい魂。The worm turns. Discussions Log in to talk about this word.