(of an automobile tire) constructed so as not to deflate completely after a puncture so that a motorist can still drive the vehicle for some distance.

Nearby words

  1. run to seed,
  2. run up,
  3. run wild,
  4. run with,
  5. run-down,
  6. run-in,
  7. run-of-paper,
  8. run-of-the-mill,
  9. run-of-the-mine,
  10. run-on

Origin of run-flat

First recorded in 1945–50 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019