Denshi Jisho — Online Japanese dictionary

きん 1: (Archaism) unit of weight ~600g;
2: (Archaism) pound (unit of mass: 453.6g);
3: loaf (of bread)
Noun 
ふきん axe
Noun 
いっきん 1: 1 kin (~0.6kg);
2: 1 loaf of bread
Noun 

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