vermes

/V ER0 M Z/
noun
  1. 1

    A narrow, worm-like structure found in animal brains between the hemispheres of the cerebellum; it is the site of termination of the spinocerebellar pathways that carry subconscious proprioception.

Source: https://en.wiktionary.org/wiki/vermes, https://en.wiktionary.org/wiki/vermis