Foramen /(?)/

Fo·ra·men

Foramen

n.

pl. Foramina, Foramines

  1. A small opening, perforation, or orifice; a fenestra.

Phrases & Compounds
Foramen of Monro
the opening from each lateral into the third ventricle of the brain.
Foramen of Winslow
the opening connecting the sac of the omentum with the general cavity of the peritoneum.