Video shows what shaku means. a unit of length approximately equivalent to 30.3 cm, ten times a sun, and a tenth of a jō; in the carpenter's square, approximately equivalent to 30.3 cm, and in the cloth measure approximately 37.9 cm. shaku synonyms: Japanese foot. Shaku Meaning. How to pronounce, definition audio dictionary. How to say shaku. Powered by MaryTTS, Wiktionary