noun

• 1Anatomy
  A bundle of nerve fibres as it emerges from the neuraxis; especially either of the paired (dorsal and ventral) bundles of nerve fibres that emerge from the spinal cord and unite to form a spinal nerve.

• 2Any of various North American lady's slipper orchids having roots used to make medicinal preparations for the nerves; especially Cypripedium calceolus and C. acaule.