1. (n.) An extramundane region where certain classes of souls were supposed to await the judgment.

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

3. (n.) A border or margin; as, the limbus of the cornea.

Bank of England Bank of France Federal Reserve bank Fort Knox Indian file Indian reservation International Monetary Fund Lombard Street bank Swiss bank World Bank abatis abutment advanced work align anthill arc-boutant arch dam archives arm armor armor-plate armory array arsenal articulation ascend attic backstop balistraria bamboo curtain bank up banquette bar barbed-wire entanglement barbican barrage barricade barrier bartizan basement bastion battle battlement bay beach beam bear-trap dam beaver dam berm bet on bevel bezel bin bird sanctuary blockade board bonded warehouse bookcase boom border bordure box branch bank breakwater breastwork brick wall brim brink broadside brow buffer build on bulkhead bulwark bundle away bunker burn bursary buttery buttress buttress pier buttressing buzz cache calculate cant careen cargo dock casemate cash register cashbox castellate catena catenation cellar central bank chain chain reaction chaining cheek chest cheval-de-frise chop chute circumvallation clearing house climb closet coal mine coast coastland coastline cock coffer cofferdam coin box colliery commercial bank compact concatenation concentrate conflagrate connection consecution conservatory continuum contravallation coral reef count on counterscarp course crab crate credit union crenellate crib cupboard curtain cycle dam decline defense demibastion depend deposit depository depot descend descent dig in diggings dike dip ditch dock drawbridge drawer drift drone drop dump dune earthwork easy slope edge embankment embattle enclosure endless belt endless round enkindle entanglement entrench escarp escarpment exchequer fall fall away fall off fan the flame farm loan bank feather featheredge federal land bank feed feed the fire fence fieldwork file filiation finance company finance corporation fire fisc fishtail flange flank flat fleam flying buttress ford foreshore forest preserve fortalice fortification fortify frame fringe gamble on game reserve gamut garrison gate gentle slope glacis glory hole go downhill go uphill godown gold depository gold mine gradation grade gradient gravity dam groin hand handedness hanging buttress hanging gardens haunch haycock haymow hayrick haystack heap heap up helicline hem hill hillside hip hoard hock shop hold hum hutch hydraulic-fill dam ignite inclination incline inclined plane inflame intend