The kanji 登 primarily represents the act of "climbing," "ascending," or "rising." It conveys the idea of moving upwards, overcoming an obstacle, or reaching a higher position. This can apply to physical actions like climbing a mountain or metaphorical actions like rising in rank or achieving success.

・On-yomi (音読み): ⚫︎ トウ (tou) ・Kun-yomi (訓読み): ⚫︎ のぼ（る） (noboru)

⚫︎ 登山（とざん） Translation: Mountain climbing, mountaineering ⚫︎ 登録（とうろく） Translation: Registration, entry ⚫︎ 登場（とうじょう） Translation: Appearance, entering (a stage, etc.)

The kanji 登 is a phono-semantic compound (形声文字). The left side of the character, ⽃, originally depicted a container. The right side, 豆, which acted as a phonetic component, representing the sound "tou". Together, the character suggests the act of climbing up and into a container, or rising above the ground. Over time, the visual representation simplified and evolved to its current form.