red herrings

Noun

red herring (plural red herrings or red herring)

1. A herring that is cured in smoke and brine strong enough to turn the flesh red; a type of kipper.
   • Up in the morning, and had some red herrings to our breakfast, while my boot-heel was a-mending, by the same token the boy left the hole as big as it was before.1660 March 8 (date written; Gregorian calendar), Samuel Pepys, Mynors Bright, transcriber, “February 28th, 1659–1660”, in Henry B[enjamin] Wheatley, editor, The Diary of Samuel Pepys […], volume I...
2. (figuratively) A clue, information, argument, etc. that is or is intended to be misleading, diverting attention from the real answer or issue.
   • Caroline visibly wavered for a second or two, much as a roulette ball might coyly hover between two numbers. Then she declined the tempting red herring.1926, Agatha Christie, The Murder of Roger Ackroyd

   Synonyms:

   decoy

3. A red herring prospectus.
4. (archaic, slang) A soldier.
   • “Devil a bit, Ma’am,” said the Major. “We couldn’t afford it. Unless the world was peopled with J.B.’s—tough and blunt old Joes, Ma’am, plain red herrings with hard roes, Sir—we couldn’t afford it. It wouldn’t do.”1846 October 1 – 1848 April 1, Charles Dickens, Dombey and Son, London: Bradbury and Evans, […], published 1848, →OCLC, page 208