The kanji character 空 primarily conveys the concept of "empty," "sky," or "void." It signifies a lack of something, an absence, or an open space. This emptiness can be literal, like an empty container, or abstract, like an empty feeling. The kanji also represents the vastness and emptiness of the sky above us.

・On-yomi (音読み): クウ (kuu) ・Kun-yomi (訓読み): そら (sora) - sky; あ（く） (a(ku)) - to become empty; から (kara) - empty, void

⚫︎空（そら）が高い。 Translation: The sky is high. ⚫︎空（から）の容器（ようき）。 Translation: An empty container. ⚫︎空気（くうき） Translation: Air

The kanji 空 is a pictograph. The original form of the character depicted a large, open space or the sky. It shows a visual representation of a hole or a cave with an opening to the sky above. Over time, the character evolved to its current form. The meaning expanded from a literal opening to encompass the broader concept of emptiness and the sky.