四種 よんしゅ Also written ししゅ, 4種 Meanings Noun, の-adjective four kinds; four sorts Noun fourth-class mail See also: 第四種郵便物 (だいよんしゅゆうびんぶつ). Kanji 四 four. Read as よん. 種 kind. Read as シュ. Words containing 四種 第四種郵便物 (だいよんしゅゆうびんぶつ) fourth-class mail Jinuma: Japanese Dictionary · Word lists