Definition of decree-law:
(n) :
An edict or law.
(v) :
To command by a decree.
(n) :
(law) The judicial decision in a litigated cause rendered by a court of equity.
(n) :
(law) The determination of a cause in a court of admiralty or court of probate.
(n) :
(religion) A predetermination made by God; an act of providence.