The kanji 入 primarily represents the concept of "entering," "to go in," or "to put in." It signifies the action of moving into a space, place, or object. It can also imply inclusion or introduction. The character's core meaning revolves around the idea of going inward or being contained within.

・On-yomi (音読み): ニュウ (nyuu) ・Kun-yomi (訓読み): 入る (iru), 入れる (ireru)

⚫︎ 入学 (nyuugaku) Translation: Entering school; enrollment. ⚫︎ 出入 (shutsunyuu) Translation: Coming and going; income and expenses. ⚫︎ 入口 (iriguchi) Translation: Entrance; entry.

The kanji 入 is a pictograph. It depicts something going into a space, originally showing an arrow entering an enclosure. The shape visually represents the action of penetration or entering. Over time, the form simplified into the current shape, retaining its core meaning of going in or entering.