1to open (transitive or intransitive)
2(of ships, vehicles, troops etc) to start
3to turn on; to put in operation; to operate; to run
4to boil
5to write out (a prescription, check, invoice etc)
6(directional complement) away; off
7carat (gold)
8abbr. for Kelvin, 開爾文|开尔文[Kai1 er3 wen2]
9abbr. for 開本|开本[kai1 ben3], book format