limbo

from The Century Dictionary.

• noun A kind of coarse cotton cloth worn by South Africans.
• noun A supposed border-land of hell; a region which has been believed by many to exist on the borders of hell, and to be the appointed abode of those who have not received the grace of Christ while living, and yet have not deserved the punishments of wilful and impenitent sinners. See the phrases.
• noun Any similar region apart from this world.
• noun A prison or other place of confinement; any place where things of little or doubtful value are deposited or thrown aside.

from the GNU version of the Collaborative International Dictionary of English.

• noun A West Indian dance contest, in which participants must dance under a pole which is lowered successively until only one participant can successfully pass under, without falling. It is often performed at celebrations, such as weddings.
• noun (Scholastic Theol.) An spiritual region where certain classes of souls were supposed to await the last judgment.
• noun Hence: Any real or imaginary place of restraint or confinement; a prison.
• noun A state of waiting, or uncertainty, in which final judgment concerning the outcome of a decision is postponed, perhaps indefinitely; neglect for an indefinite time.
• noun (Anat.) A border or margin.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A dance played by taking turns crossing under a horizontal bar or stick. The stick is lowered with each round, and the game is won by the player who passes under the bar in the lowest position.
• noun Roman Catholic theology The place where innocent souls exist temporarily until they can enter heaven, notably those of the saints who died before the advent of Christ (limbus patruum) and those of unbaptized but innocent children (limbus infantum).
• noun by extension Any in-between place, state or condition of neglect or oblivion which results in an unresolved status, delay or deadlock.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an imaginary place for lost or neglected things
• noun the state of being disregarded or forgotten
• noun (theology) in Roman Catholicism, the place of unbaptized but innocent or righteous souls (such as infants and virtuous individuals)