(n) :
a thick, whitish cord of nerve tissue which is a major part of the vertebratecentral nervous system. It extends from the brainstem down through the spine, with nerves branching off to various parts of the body
(n) :
a thick, whitish cord of nerve tissue which is a major part of the vertebratecentral nervous system. It extends from the brainstem down through the spine, with nerves branching off to various parts of the body