機

The core concept is the "trigger" or "pivot"—the precise point of tension where a small movement releases a larger force. Concrete senses include the trigger mechanism of a crossbow, devices with moving parts (e.g., looms), and general mechanical apparatuses. Abstract senses include a turning point or decisive juncture; a window of opportunity created by aligned circumstances; hidden inner workings or motives; and sudden intuition or epiphany (particularly in philosophical or Chan contexts).

Primarily functions as a noun. As a modifier, it typically imparts a sense of criticality, mechanism, or hidden operation.

Distinguish "opportunity" here from 運 (random luck), as 機 refers specifically to the alignment of external circumstances. Note significant overlap and potential slippage with 幾 (meaning "a few," "almost," or "subtle") in early manuscripts; if context suggests quantity or approximation, consider if this is a graphic variant or loan for 幾.

Tang-period reading: *giəi (Fanqie: 居依).

In early texts, prioritize specific hardware (weaponry/textiles) over the modern sense of "machinery." When paired with terms for nature or heaven, look for the "workings" of the cosmos; when paired with heart or mind, look for psychological triggers or intentions.