What is Disorderly Conduct?

Legal Definition
Disorderly conduct is a criminal charge in most jurisdictions in the United States and certain other countries. Typically, disorderly conduct makes it a crime to be drunk in public, to "disturb the peace", or to loiter in certain areas. Many types of unruly conduct may fit the definition of disorderly conduct, as such statutes are often used as "catch-all" crimes. Police may use a disorderly conduct charge to keep the peace when people are behaving in a disruptive manner to themselves or others, but otherwise present no danger.

Disorderly conduct is typically classified as an infraction or misdemeanor. However, in certain circumstances – e.g., when committed in an airport, or near a funeral – it may be a felony in some US states.
-- Wikipedia
Legal Definition
A term of loose and indefinite meaning (except as occasionally defined in statutes), but signifying generally any behavior that is contrary to law, and more particularly such as tends to disturb the public peace or decorum, scandalize the community, or shock the public sense of morality. People v. Keeper of State Reformatory, 176 N. Y. 465, 68 N. E. 884; People v. Davis, 80 App. Div. 448, 80 N. Y. Supp. 872; City of Mt. Sterling v. Holly, 108 Ky. 621, 57 S. W. 491; Pratt v. Brown. 80 Tex. 608, 16 S. W. 443; Kahn v. Macon, 95 Ga. 419, 22 S. E. 641; People v. Miller, 38 Hun, 82; Tyrrell v. Jersey City, 25 N. J. Law. 536.
-- Black's Law Dictionary