ankle jerk
noun
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.
Origin of ankle jerk
First recorded in 1885–90
Words nearby ankle jerk
ankh,
anking,
ankle,
ankle biter,
ankle boot,
ankle jerk,
ankle joint,
ankle reflex,
ankle sock,
ankle-deep,
anklebone