foramen

synonym: foramina
https://doi.org/10.1351/goldbook.10735
Opening, hole.
Notes:
  1. The skull has several such openings that act as passageways for structures, notably nerves and blood vessels.
  2. The vertebral column is perforated by the vertebral foramina through which nerves from the spinal cord exit to the periphery.
Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 757 [Terms] [Paper]