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3. cast (some) light on (something)

cast (some) light on (something)

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cast (some) light on (something)

To reveal information or details about something; to clarify or help people understand something. We've hired a private investigator to help cast light on the clandestine dealings of the baron. These documents we've uncovered cast some light on how the late author's final book was meant to end.

See also: cast, light, on