''In this Act, unless there is anything repugnant in the subject or context,— (1) “ Code ” includes rules ; (2) “ decree ” means the formal expression of an adjudication which, so far as regards the Court expressing it, conclusively determines the rights of the parties with regard to all or any of the matters in controversy in the suit and may be either preliminary or finalIt shall be deemed to include the rejection of a plaint and the determination of any question within section 47 or section 144, but shall not include— ...''