buck slip

American  

noun

1. Informal.  a paper attached to and showing the destination and source of an interoffice memorandum, file, or the like.

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Example Sentences

“I’ll never forget Gordon sitting down, taking out his buck slip and saying, ‘What do you need?’”

From New York Times

Then one copy would come to a given branch, a buck slip slapped on it, and it would be routed around the branch.

From Washington Post