godan verb (-ku)
enlighten; edify
Archaic verb meaning to enlighten or edify someone; not used in modern Japanese outside of classical or historical contexts.
古典では「民を啓く」のように使われる。
In classical texts, it is used as in 'to enlighten the people'.
The historical derivation is uncertain; the kanji 啓 is conventionally associated with 'enlighten' or 'open up'.