Black's Law Dictionary (2nd edition)dictionaries

In Nubibus

In the clouds; in abeyance; in custody of law. In nubibus, in mare, in terrA, vel in custodiA legis, in the air, sea, or earth, or in the custody of the law. Tayl. Gloss. In case of abeyance, the inheritance is figuratively said to rest in nu-bibus, or in gremio legis

Source: Black’s Law Dictionary 2nd Ed (1910)