- to open (transitive or intransitive)
 - (of ships, vehicles, troops etc) to start
 - to turn on; to put in operation; to operate; to run
 - to boil
 - to write out (a prescription, check, invoice etc)
 - (directional complement) away; off
 - carat (gold)
 - abbr. for Kelvin, 開爾文|开尔文[Kai1 er3 wen2]
 - abbr. for 開本|开本[kai1 ben3], book format
 
Resources
- Wiktionary: 开
 - MDBG: 开
 - Examples with 开 on Tatoeba