In Korea, a unit of mass, since 1905 = 600 grams. 
Also romanized as
geun, kon, keun, and sometimes called a
catty. Some earlier magnitudes:
| Period, Centuries CE |
Magnitude in grams |
|---|---|
| 3rd | 222.73 |
| 6th-7th | 668.19 |
| 7th-10th | 596.82 |
| 10th-14th | 596.82 |
Compounding this complication is that the value of a geun can change according to what is weighed. When weighing meat, 600 grams is a geun, while 400 grams can be a geun for fruits and 375 grams a geun for vegetables.
Kim Jun-Hee.
Taking Measure.
Invest Korea Journal, March-April 2007.
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