when pigs fly

idiom
Updated on: 15 Nov 2017

Definition of when pigs fly

US, informal
used to say that one thinks that something will never happen
  • The train station will be renovated when pigs fly.

Word by Word Definitions

pig play pigs
  1. : a young domesticated swine usually weighing less than 120 pounds (50 kilograms) — compare hog 1a

  2. : a wild or domesicated swine regardless of age or weight

  3. : pork

  1. : farrow

  2. : to live like a pig

  3. : farrow

fly play
  1. : to move in or pass through the air with wings

  2. : to move through the air or before the wind or through outer space

  3. : to float, wave, or soar in the air

  1. : the action or process of flying : flight

  2. : a device consisting of two or more radial vanes capable of rotating on a spindle to act as a fan or to govern the speed of clockwork or very light machinery

  3. : flywheel

  1. : to hit a fly in baseball

  1. : a winged insect

  2. : any of a large order (Diptera) of winged or rarely wingless insects (such as the housefly, mosquito, or gnat) that have the anterior wings functional, the posterior wings reduced to halteres, and segmented often headless, eyeless, and legless larvae — compare maggot

  3. : a large stout-bodied fly

  1. : keen, artful


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