superior colliculus

English Thesaurus

1. an essential visual center between the retina and the striate cortex (noun.body)

hypernym	:	center, centre, nerve center, nerve centre,
definition	:	a cluster of nerve cells governing a specific bodily process (noun.body)

part meronym	:	mesencephalon, midbrain,
definition	:	the middle portion of the brain (noun.body)