1
general::
Phrase(s): lost-and-found
an office or department that handles items that someone has lost that have been found by someone else. • The lost-and-found office had an enormous collection of umbrellas and four sets of false teeth! • I found a book on the seat of the bus. I turned it in to the driver, who gave it to the lost-and-found office.
McGrawhill's American Idioms And Phrasal Verbs