transitive. To enlighten (a person, the heart, spirit, etc.) spiritually or intellectually; to inspire. Now somewhat rare.

transitive. To set (a thing) on fire; to kindle, set light to. Also intransitive: to be on fire, to burn. Frequently figurative. Obsolete.

transitive. To enlighten, esp. to shed light on, illuminate (frequently figurative). Also intransitive.

transitive. To shed spiritual light upon (a person or place); to enlighten or illuminate spiritually. Obsolete.

transitive. To impart greater knowledge, wisdom, or understanding to; (in later use) spec. to free from prejudice or superstition. Cf. enlightened…

Directly figurative esp. To illuminate (the mind). Obsolete or archaic. (The earlier use.)

To enlighten intellectually; to give knowledge or understanding to.