ankle jerk


a reflex extension of the foot, caused by contraction of the muscles of the calf, resulting from a sharp tap on the Achilles tendon; Achilles reflex.

Nearby words

  1. ankh,
  2. anking,
  3. ankle,
  4. ankle biter,
  5. ankle boot,
  6. ankle joint,
  7. ankle reflex,
  8. ankle sock,
  9. ankle-deep,
  10. anklebone

Origin of ankle jerk

First recorded in 1885–90 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019