cue in

cue in idiom
Give information or instructions, for example, She said she'd cue us in on their summer plans. This verbal use of the noun cue in the sense of “guiding suggestion” dates from the 1920s.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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