The kanji 孫 primarily means "grandchild," referring to the child of one's son or daughter. It represents the next generation after one's own children. It can also figuratively refer to descendants or inheritors in a broader sense.

・On-yomi (音読み): ソン (son) ・Kun-yomi (訓読み): まご (mago)

⚫︎ 孫 (まご) が ３ 人 います。 Translation: I have three grandchildren. ⚫︎ 孫 (ソン) 会社 (かいしゃ) Translation: Subsidiary company (literally "grandchild company," referring to a company owned by another company). ⚫︎ 初 (はつ) 孫 (まご) Translation: First grandchild

The kanji 孫 is a phono-semantic compound (形声文字; けいせいもじ). The left side is a component that represents "woman" (女; おんな), which has been simplified over time. The right side is a phonetic component, that contributes to the sound. The original meaning of the character likely related to the descendants or offspring of a woman. It evolved to specifically mean grandchild.