The kanji 投 primarily conveys the concept of "to throw," "to cast," or "to hurl" something. It implies an action where an object is propelled through the air, often with the intention of reaching a specific target or distance. The core meaning also encompasses the act of investing or putting something into a venture.

・On-yomi (音読み): ・tō（トウ） ・Kun-yomi (訓読み): ・nage(ru)（投げる） ・na(geru)

⚫︎ 投げる（投げる） Translation: To throw; to cast; to hurl. ⚫︎ 投資（とうし） Translation: Investment. ⚫︎ 投手（とうしゅ） Translation: Pitcher (in baseball).

The kanji 投 is a phono-semantic compound (形声文字). The left side is the radical 手 (て, te), meaning "hand." The right side is 殳 (shū), which originally depicted a type of weapon. Thus, the character combines the "hand" with the idea of a weapon or action, indicating the act of throwing or casting something with the hand. The formation reflects the action of using the hand to launch an object.