Limbo (noun)

1. An uncertain state or condition.
2. A region on the border of hell or heaven where certain souls are kept pending the Last Judgment.
3. A dance in which the dancers bend backwards and pass under a horizontal bar held at the waist level.

Origin:

Late 16th century: from latin limbus "edge, boundary", from limbus "hem, border", of germanic origin.

Examples:

1. The project was in limbo for months.
2. The company was in financial limbo.
3. According to Catholic theology, unbaptized infants went to limbo.
4. The limbo dance originated in Trinidad and Tobago.
5. The limbo dancers bent backwards and passed under a bar held at waist level.