Webster's Revised Unabridged Dictionary · 1913

Banc

Banc ({not transcribed}) , noun

[Old French banc, Late Latin bancus. See Bank, n.]

A bench; a high seat, or seat of distinction or judgment; a tribunal or court.
Collocations (1)
In banc or In banco or In bank , in full court, or with full judicial authority; as, sittings in banc (distinguished from sittings at nisi prius).

Also: Bank, Bancus