babinski’s reflex

noun

1. a reflex extension of the great toe with flexion of the other toes, evoked by stroking the sole of the foot: normal in infants but otherwise denoting central nervous system damage.

n.

1. An extension of the great toe, sometimes with fanning of the other toes, in response to stroking of the sole of the foot. It is a normal reflex in infants, but is associated with a disturbance of the pyramidal tract in children and adults.Babinski’s sign toe reflex