What is "pyramidal tract"

n. (context anatomy English) A major collection of axons that transmits nerve impulses from the motor cortex to the spinal cord

n. any of the important motor nerves on each side of the central nervous system that run from the sensorimotor areas of the cortex through the brainstem to motor neurons of the cranial nerve nuclei and the ventral horn of the spinal cord [syn: pyramidal motor system, corticospinal tract]