Hence: Any real or imaginary place of restraint or confinement; a prison; as, to put a man in limbo.

A border or margin; as, the limbus of the cornea.

The visible borderline between the clear cornea and the white sclera of the eye. The conjunctival layer that covers the globe also joins at the limbus.

Latin = a margin, usually curved, hence, limbus of cornea, its circular junction with the sclera, adjective - limbic; limbic lobe of the brain comprises structures which encircle the junction of the diencephalon and telencephalon.

Border, hem, or fringe; a general term for the margins of certain structures, as in limbus vertebral factures.

Right atrial structure composing the thickened and elevated margin of the fossa ovalis

a border or edge of any of various body parts distinguished by color or structure