What is Cadaver?

Legal Definition
A cadaver, also called corpse (singular) in medical, literary, and legal usage, or when intended for dissection, is a deceased body. The obsolete British term lich for corpse, sometimes spelled lych, is no longer even listed in major British dictionaries such as Longman, Macmillan, Cambridge, or Oxford Online Dictionaries. However, the term lich has been revived in modern fantasy fiction for a type of "undead" creature.
-- Wikipedia
Legal Definition
A dead human body; a corpse. Cadaver nullius in bonis, no one can have a right of property In a corpse. 3 Co. Inst. 110, 2 Bl. Comm. 429 ; Griffith v. Railroad Co.., 23 S. C. 32, 55 Am. Rep. 1.
-- Black's Law Dictionary
Legal Definition
A corpse.
-- Ballentine's Law Dictionary