banc : Idioms & Phrases
Court in banc , ∨ Court in bank
- The full court sitting at its regular terms for the hearing of arguments upon questions of law, as distinguished from a sitting at nisi prius.
Webster 1913
In banc , In banco (the ablative of bancus), In bank
- in full court, or with full judicial authority; as, sittings in banc (distinguished from sittings at nisi prius).