Babinski

n. reflex of the big toe (Medicine)

In medicine and neurology, the Babinski reflex or Babinski sign is a reflex that can identify disease of the spinal cord and brain and also exists as a primitive reflex in infants. When non-pathological it is called the plantar reflex while the term Babinski's sign refers to its pathological form.
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Primitive reflexes are reflex actions originating in the brain stem that are exhibited by infants but not adults in response to particular stimuli. These reflexes disappear or are inhibited by the frontal lobes as a child moves through normal child development. These primitive reflexes are also called infantile, infant or newborn reflexes.
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Ba·bin·ski, Joseph François Felix 1857-1932. French neurologist who described the diagnostic relevance of Babinski's reflex. [more]Babinski - Community and Resources

Noun
1. extension upward of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front; normal in infants under the age of two years but a sign of brain or spinal cord injury in older persons
(synonym) Babinski reflex, Babinski sign
(hypernym) reflex, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction

n. Babinski, reflex of the big toe (Medicine)