Accidental death and dismemberment insurance

What does Accidental death and dismemberment insurance mean in American Law?

The definition of Accidental death and dismemberment insurance in the law of the United States, as defined by the lexicographer Arthur Leff in his legal dictionary is:

A policy of accident insurance covering accidental death and accidental maiming, i.e., the loss of some discrete part of the body, e.g., hand, leg, eye, etc.