世界税関機構 せかいぜいかんきこう Meanings Noun World Customs Organization; WCO Kanji 世 world. Read as セ. 界 realm. Read as カイ. 税 tax. Read as ゼイ. 関 relate. Read as カン. 機 machine 構 structure. Read as コウ. Jinuma: Japanese Dictionary · Word lists