What is Bill Of Certiorari?

Legal Definition
A bill, the object of which is to remove a suit in equity from some inferior court to the court of chancery, or some other superior court of equity, on account of some alleged incompetency of the inferior court, or some injustice in its proceedings. Story, Eq. PI. (5th Ed.) § 298.
-- Black's Law Dictionary
Legal Definition
In English chancery practice. An original bill praying relief. It was filed for the purpose of removing a suit pending in some inferior court of equity into the court of chancery, on account of some alleged incompetency or inconvenient. Certum est quod certum reddi potest. That is certain which can be rendered certain. 9 Coke, 47; Broom, Max. 623.
-- Black's Law Dictionary
Legal Definition
A bill in equity for the removal of a suit to a higher court.
-- Ballentine's Law Dictionary