BABINSKI REFLEX

[Ba.bin.ski reflex] n [J.F.F. Babinski d. 1932 Fr. neurologist] (1900): a reflex movement in which when the sole is tickled the big toe turns upward instead of downward and which is normal in infancy but indicates damage to the central nervous system (as in the pyramidal tracts) later in life--called also Babinski sign, Babinski's reflex