D defs.my
Entry 2 senses Webster, 1913

Enlighten

/ĕnˌ-līt'-ən/ · En·light·en · IPA /ɪnˈlaɪtən/
01 v. t. To supply with light; to illuminate; as, the sun enlightens the earth.
  1. 1.
    To supply with light; to illuminate; as, the sun enlightens the earth.
    “His lightnings enlightened the world.” — Ps. xcvii. 4.
  2. 2.
    To make clear to the intellect or conscience; to shed the light of truth and knowledge upon; to furnish with increase of knowledge; to instruct; as, to enlighten the mind or understanding.
    “The conscience enlightened by the Word and Spirit of God.” Trench.