What is Ad Quod Non Fuit Responsum?

Legal Definition
To which there was no answer. A phrase used in the reports, where a point advanced in argument by one party was not denied by the other; or where a point or argument of counsel was not met or noticed by the court; or where an objection was met by the court, and not replied to by the counsel who raised it. 3 Coke, 9; 4 Coke, 40.
-- Black's Law Dictionary
Legal Definition
To which there was no answer.
-- Ballentine's Law Dictionary