to open / to start / to turn on / to boil / to write out (a prescription, check, invoice etc) / to operate (a vehicle) / carat (gold) / abbr. for Kelvin, 開爾文|开尔文[Kai1 er3 wen2] / abbr. for 開本|开本[kai1 ben3], book format
father's elder brother / senior / paternal elder uncle / eldest of brothers / respectful form of address / Count, third of five orders of nobility 五等爵位[wu3 deng3 jue2 wei4]