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
to hang or suspend (from a hook etc) / to hang up (the phone) / (of a line) to be dead / to be worried or concerned / to make a phone call (dialect) / to register or record / classifier for sets or clusters of objects / (slang) to kill / to die / to be finished / to fail (an exam)