We found one dictionary that defines the word cast light:

Phrases: cast light on, cast a light, cast a light on, to cast a light, cast new light on, more... ▸ Words similar to cast light ▸ Usage examples for cast light ▸ Idioms related to cast light ▸ Wikipedia articles (New!) ▸ Words that often appear near cast light ▸ Rhymes of cast light ▸ Invented words related to cast light