Definition
To mutilate is to inflict severe physical injury that deprives a person (or thing) of an important part or function. In legal usage, the term carries two related but distinct applications:
1. (Personal injury / criminal law) To lacerate, wound, or maim a person in a manner that impairs the use of a bodily part — particularly by cutting off, disabling, or permanently damaging a limb or organ. In this sense, mutilation is effectively synonymous with mayhem and maim, describing injuries serious enough to diminish a person's capacity for self-defense or normal physical function.
2. (Document / property law) To deface or destroy a document, instrument, or record — such as a will, public record, currency, or court filing — so as to render it incomplete, illegible, or invalid. Statutes in many jurisdictions criminalize the mutilation of public records, official documents, and legal instruments as a distinct offense.
Common Language
Modern common usage (Wiktionary): To physically harm so as to impair use, notably by cutting off or disabling a vital part such as a limb; to destroy beyond recognition; to render imperfect or defective.
Historical common usage (Webster's 1913): Deprived of, or having lost, an important part; mutilated. (Webster's 1913 entry addresses the adjective form, reflecting the term's general sense of incompleteness or loss of an essential part.)
The common and legal meanings largely overlap when applied to the human body — both contemplate serious, disfiguring physical harm. The meaningful gap appears in the legal context of documents and instruments: ordinary usage does not typically frame tearing, burning, or defacing a paper as "mutilation," but legislatures and courts have long used the word in precisely that way, treating document mutilation as a legally significant act with criminal and evidentiary consequences distinct from mere destruction.
Common Confusion
Mutilate, maim, and mayhem are closely intertwined and frequently used interchangeably in both historical statutes and older treatises, but they are not identical. Maim typically emphasizes permanent disablement of a limb or bodily member. Mayhem, in its common-law form, requires that the injury diminish the victim's fighting capacity — a narrower and historically specific standard. Mutilate is broader: it encompasses the general act of severe wounding or disfigurement without requiring that the injury meet the precise fighting-capacity threshold of mayhem. In modern statutory codes, all three terms often appear together in the same provision, but researchers should not assume they are interchangeable without checking the specific statute's definitions.
Why It Matters in Research
Researchers will encounter "mutilate" in at least two largely separate bodies of law, and conflating them can produce false leads.
In criminal law and tort, the term appears most heavily in provisions dealing with assault, aggravated battery, mayhem, and cruelty — particularly in 19th- and early 20th-century materials. Anderson's direct cross-references to MAIM and MAYHEM are the correct navigational path for tracing that lineage. Historical sources treating mutilation as a criminal act are primarily concerned with the severity and permanence of bodily injury, not with the precise mechanism of harm.
In document and records law, "mutilate" appears in statutes protecting currency (federal law prohibits mutilation of U.S. coins and currency), public records, court instruments, and testamentary documents. This usage is largely absent from Anderson and other 19th-century general dictionaries of law, meaning a researcher relying solely on historical dictionary sources will miss an entire branch of the term's legal life. Modern statutory compilations and administrative codes are the correct sources here.
A third area worth flagging: animal cruelty statutes in many jurisdictions explicitly use "mutilate" to describe prohibited acts of harm to animals. This usage tracks the personal-injury meaning but applies it to a different legal subject, and it developed primarily in 20th-century legislation.
Researchers in comparative or international law should also be aware that "mutilation" — particularly in the phrase "female genital mutilation" — has acquired a precise and politically significant meaning in international human rights instruments and domestic implementing legislation. This usage is formally distinct from the common-law mayhem/maim tradition.
Historical Dictionary Support
Anderson's Dictionary of Law offers a compact but functionally complete entry: mutilate means to lacerate, wound, or maim, and is treated as essentially equivalent to committing mayhem. The entry does not develop a separate meaning for document mutilation, reflecting the 19th-century focus on bodily harm as the core legal concern.
Historical legal dictionaries generally agree that mutilation in the criminal law context overlaps substantially with mayhem and maim, but they are inconsistent in how they differentiate the three terms. Some treat mutilation as the broadest category, others as a synonym for mayhem proper. Bouvier's Law Dictionary, in its various editions, tends to fold mutilation discussion into the mayhem entry rather than treating it independently — a choice that can obscure the term's independent statutory history.
What historical dictionaries as a class miss: the development of document-mutilation offenses and, entirely, the 20th-century statutory uses in currency law, records preservation, and animal cruelty. Researchers should treat Anderson and contemporaneous sources as reliable guides to the personal-injury meaning only.
Jurisdictional Note
Statutory definitions of mutilation vary meaningfully across jurisdictions, particularly as to whether the term requires permanent disfigurement, loss of a body part, or merely serious physical injury. In document-related offenses, the specific instruments protected and the penalties attached differ state by state. Federal law addresses currency mutilation specifically and separately from general criminal codes.