Maim

Definition from Nolo’s Plain-English Law Dictionary

To inflict serious bodily injury, including mutilation, disfigurement, or any harm that limits the victim's ability to function physically. Originally, in English common law it meant to cut off or permanently cripple a part of the body such as an arm, leg, hand, or foot. In criminal law, such serious harm can turn an ordinary assault into an aggravated assault.
 

Definition provided by Nolo’s Plain-English Law Dictionary.