catty
觔 is a rare kanji whose core meaning is a traditional unit of weight, the catty. Its standalone meaning is narrow and technical.
觔 is a rare character whose historical development is uncertain. It visually combines 角 (horn) and 力 (strength), but the exact origin of the weight-unit meaning is unclear.
The left side 角 suggests a horn or corner, and the right side 力 suggests strength. Imagine a strong horn used as a weight on a scale, measuring a catty.
For キン, imagine a king weighing a catty of gold: king -> キン, and the strong horn (角) helps measure the weight.