What is Cancelli?

Legal Definition
The rails or lattice work or balusters inclosing the bar of a court of justice or the communion table. Also the lines drawn on the face of a wlil or other writing, with the Intention of revoking or annulling it. See Cancel.
-- Black's Law Dictionary
Legal Definition
The railing inclosing the bar of a court; cancellation marks.
-- Ballentine's Law Dictionary