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

1. topic
2. problem for discussion
3. exam question
4. subject
5. to inscribe
6. to mention

classifiers: 個, 道

1. (historical dictionaries only) alternative form of 㼵 (dì, “small basin”)
2. (obsolete on its own in Standard Chinese) alternative form of 睇 (“to look at; to scrutinize”)
3. alternative form of 㼵 (dì, “small basin”)
4. alternative form of 睇 (“to look at; to scrutinize”)