door knocker
n.— «If you are not at home at the time of delivery, it is common practice for the delivery driver to leave a “DOOR KNOCKER” with instructions for alternate arrangements of your package.» —“Flexible Learning Distance Education” University of Windsor Bookstore (Ontario, Canada) Feb. 21, 2007. (source: Double-Tongued Dictionary)
Further reading
Enthusiastic book recommendations! Martha’s savoring the biography of Alexander von Humboldt, the 19th-century explorer, polymath, and naturalist who revolutionized our understanding of nature and predicted the effects of human activity on...
A librarian opens a book and finds a mysterious invitation scribbled on the back of a business card. Another discovers a child’s letter to the Tooth Fairy, tucked into a book decades ago. What stories are left untold by these forgotten...