Hypertext Webster Gateway: "foramen"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Foramen \Fo*ra"men\, n.; pl. L. {Foramina}, E. {Foramines}. [L.,
fr. forare to bore, pierce.]
A small opening, perforation, or orifice; a fenestra.
{Foramen of Monro} (Anat.), the opening from each lateral
into the third ventricle of the brain.
{Foramen of Winslow} (Anat.), the opening connecting the sac
of the omentum with the general cavity of the peritoneum.
From WordNet (r) 1.7 (wn)
foramen
n : a natural opening or perforation through a bone or a
membranous structure [syn: {hiatus}]
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