(Lat. “Let it be done.”) in English practice. A short order or warrant of a judge or magistrate directing some act to be done; an authority issuing from some competent source for the doing of some legal act.One of the proceedings in the English bankrupt practice, being a power, signed by the lord chancellor, addressed to the court of bankruptcy, authorizing the petitioning creditor to prosecute his complaint before it. 2 Steph. Comm. 199. By the statute 12 &13 Vict. c. 110. fiats were abolished.