door-knocker n. a ticket, slip, or note left to indicate a visit or delivery was attempted but nobody answered the door. Editorial Note: Thanks to Joe Clark for suggesting today’s entry. (source: Double-Tongued Dictionary)
Further reading
The emotional appeal of handwriting and the emotional reveal of animal phrases. Should children be taught cursive writing in school, or is their time better spent studying other things? A handwritten note and a typed one may use the very same words...
Shaun Usher has collected many marvelous epistles in Letters of Note: Correspondence Deserving of a Wider Audience (Bookshop|Amazon). One of them, from E. B. White, is a thoughtful letter of encouragement urging the reader to “wind the clock...
Also a term for large hoop earrings popular in the late eighties. See Notorious B.I.G. ‘Gimme the loot’: “…and when I rock her and drop her I’m taking her door knockers…”
also used in the Southern US for unusually large nipples on a woman…not to be confused with “knockers” which refer of course to the entire nipple support system…