A hollow cord of nervous or embryonic nervous tissue, as the spinal cord of a vertebrate embryo.(noun)
The Century Dictionary (Public Domain)
Use "nerve-tube" in a sentence
"(Evolved from Scolecida by formation of dorsal nerve-tube and chorda, and resembling tailed larvæ of Ascidians.) 4."
"Or increased growth over a section of a tube causes it to swell out; in this wise the brain develops from the nerve-tube, the stomach from the alimentary tube."
"Rapid growth concentrated at one point brings about an evagination; in this manner are formed the sense-organs from the nerve-tube, the liver and lungs from the alimentary tube."