In old English law. A hall, or court; the court of a baron, or manor; a court baron, Spelman. Aula ecclesise. A nave or body of a church where temporal courts were anciently held. Aula regis. The chief court of England in earty Norman times. It was established by William the Conqueror in his own hall. It was composed of the great officers of state, resident in the palace, and followed the king’s household in all his expeditions.
AULA
TheLaw.com Law Dictionary & Black's Law Dictionary 2nd Ed.