What is Bill For A New Trial?

Legal Definition
A bill in equity in which the specific relief asked is an injunction against the execution of a judgment rendered at law and a new trial in the action, on account of some fact which would render it inequitable to enforce the judgment, but which was not available to the party on the trial at law, or which he was prevented from presenting by fraud or accident, without concurrent fraud or negligence on his own part.
-- Black's Law Dictionary
Legal Definition
A bill in equity seeking a new trial of an action at law upon equitable grounds. See 28 Wash. 118, 68 Pac. 165.
-- Ballentine's Law Dictionary