Definitions

1. noun

singular: a small opening, typically a hole or a gap in a bone through which nerves or blood vessels pass; plural: openings in a bone through which nerves or blood vessels pass.

“The foramina in the skull allowed for the passage of nerves and blood vessels.”

2. noun

an opening or hole in a wall or other structure, especially for the passage of a pipe or cable.

“The foramina in the wall made it easier to install the electrical wiring.”