The kanji 巣 means "nest" or "lair." It refers to a structure built by animals, especially birds, for shelter, breeding, and raising their young. It can also figuratively refer to a place of refuge or a dwelling.

・On-yomi (音読み): Sō (ソウ) ・Kun-yomi (訓読み): 巣 (su)

⚫︎ 鳥の巣 Translation: Bird's nest ⚫︎ 巣作り Translation: Nest building ⚫︎ 巣穴 Translation: Burrow; den

The kanji 巣 is a pictograph. It depicts a nest with a structure resembling a bird's nest. The top part represents the branches or materials used to build the nest, and the bottom part depicts the inside, which is the nest itself. Over time, the form became simplified to its present appearance, maintaining the representation of a shelter for animals, especially birds.