The kanji 機 primarily conveys the idea of "machine," "mechanism," or "opportunity." It implies a device or system that performs a specific function, or a timely chance or opening for something to happen. It can also relate to aspects of a person's nature or character, or a hidden function or a delicate condition.

・On-yomi (音読み): キ ・Kun-yomi (訓読み): はた (meaning "loom," an old device for weaving cloth)

⚫︎ 機会 Translation: Opportunity; chance. ⚫︎ 機械 Translation: Machine; machinery. ⚫︎ 危機 Translation: Crisis; danger; critical situation.

The kanji 機 is a phono-semantic compound. The left side, 木, is the radical meaning "tree" or "wood." The right side, 幾 (a phonetic component), implies "few," "small," or "beginning." Originally, it referred to the loom, a wooden machine for weaving cloth. Over time, it expanded to mean "mechanism," "machine," and also came to be used to describe subtle elements such as a person's "mind" or an "opportunity."