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
gun / firearm / rifle / spear / thing with shape or function similar to a gun / CL:支[zhi1],把[ba3],桿|杆[gan3],條|条[tiao2],枝[zhi1] / to substitute for another person in a test / to knock / classifier for rifle shots