1. (noun) 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

• babinski
• babinski sign

1. (noun) 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

• inborn reflex
• innate reflex
• instinctive reflex
• physiological reaction
• reflex
• reflex action
• reflex response
• unconditioned reflex