Explore each form from the oldest known stage to today.
The character 枢 (shū) originates from ancient China and is composed of the radical 木 (tree/wood) and the phonetic component 区 (qū). Its original meaning was the 'door pivot' or 'hinge'—the crucial wooden axle around which a door rotates. This core concept of a central, pivotal point expanded metaphorically to signify something essential, central, or controlling, as seen in words like 中枢 (center/core) and 枢機 (pivotal point). Over time, its form was standardized from ancient script seal scripts to the modern kanji 枢. Arrived in Japan: The character 枢, along with the broader Chinese writing system, is believed to have arrived in Japan around the 5th century AD, primarily through cultural exchange with the Korean peninsula and direct contact with China. It was formally adopted and integrated into the Japanese writing system during the subsequent centuries.