6 oz, ancient measurement
鋝 is a rare kanji that refers to an ancient Chinese unit of weight, approximately six ounces. Its meaning is limited to this specific historical measurement.
鋝 combines 金 (metal) with 寽, which likely contributes the sound. The character was used for a specific weight unit, possibly related to metal ingots or coins.
The left side 金 (metal) suggests something weighed on a scale, and the right side 寽 looks like a hand measuring a small amount. Together they represent the ancient six-ounce weight.
For レツ, imagine a metal weight so heavy it makes you sweat: 'lets' you feel the weight -> レツ.
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