cast (some) light upon (something)(redirected from cast light upon something)
cast (some) light upon (something)
To reveal information or details about something; to clarify or help people understand something. (A more formal version of "cast (some) light on something.") We've hired a private investigator to help cast light upon the clandestine dealings of the baron. These documents we've uncovered cast some light upon how the late author's final book was meant to end.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
cast/shed/throw light on
To provide information about or clarify (something).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.