What is Attentat?

Legal Definition
In the language of the civil and canon laws, is anything whatsoever in the suit by the judge a quo, pending an appeal. 1 Addams, R. 22, n.; Ayl. Par. 100.
-- Bouviers Law Dictionary
Legal Definition
Lat. He attempts. In the civil and canon law. Anything wrongfully innovated or attempted in a suit by an inferior judge, (or judge a quo,) pending an appeal. 1 Addams, 22, note; Shelf. Mar. & Div. 562.
-- Black's Law Dictionary
Legal Definition
Any improper act done by a judge in an action pending an appeal from his decision.
-- Ballentine's Law Dictionary