The kanji 紙 primarily represents "paper". It encompasses various forms of paper used for writing, printing, or other purposes. The core meaning revolves around the thin, flat material made from processed plant fibers used for various applications.

・On-yomi (音読み): シ (shi) ・Kun-yomi (訓読み): かみ (kami)

⚫︎ 手紙 Translation: Letter ⚫︎ 紙飛行機 Translation: Paper airplane ⚫︎ 和紙 Translation: Japanese paper

The kanji 紙 is a phono-semantic compound (形声文字). The left side is a radical called 糸 (糸) which represents "thread" or "silk". The right side is 氏 (shi), which represents a sound component. Originally, paper was made from the same material of "silk", which is made of thread. Thus, the meaning related to "paper" is derived. The character's evolution from oracle bone script to its modern form reflects the development of papermaking techniques and the widespread use of paper.