Definition of mutilating:
(v) :
To physically harm as to impair use, notably by cutting off or otherwise disabling a vital part, such as a limb.
(v) :
To destroy beyond recognition.
(v) :
(figuratively) To render imperfect or defective.
(n) :
Something that has been mutilated.
(adj) :
(obsolete) Deprived of, or having lost, an important part; mutilated.
(adj) :
(archaic, zoology) Having fin-like appendages or flukes instead of legs, like a cetacean does.