fatally vague statute
Defined in 1 dictionary — Case Law
Definitions from Case Law
United States Supreme Court
A statute is fatally vague only when it exposes a potential actor to some risk or detriment without giving him fair warning of the nature of the proscribed conduct.
Defined by the Supreme Court in - Rowan v. United States Post Office Department, 397 U.S. 728 (1970).