Sinonim foramen

English Thesaurus

1. a natural opening or perforation through a bone or a membranous structure (noun.body)

hypernym	:	gap, opening,
definition	:	an open or empty space in or between things (noun.object)

hyponym	:	foramen of monro, interventricular foramen, monro's foramen,
definition	:	the small opening (on both the right and left sides) that connects the third ventricle in the diencephalon with the lateral ventricle in the cerebral hemisphere (noun.body)

hyponym	:	foramen magnum,
definition	:	the large opening at the base of the cranium through which the spinal cord passes (noun.body)