sign out

sign out idiom
Record the departure of a person or the removal of an object, as in He turned in his room key and signed out about an hour ago, or I asked the librarian how many books I could sign out. [c. 1930]

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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