As used in this chapter, the following terms shall have the meanings indicated:
Any two or more persons gathered together and acting in a boisterous, noisy, riotous, offensive, disorderly or threatening manner toward each other or others, or committing any act or acts which in any way breach or disturb the peace or trend to breach or disturb the peace.
Any building or structure or any part thereof which is used for gambling or which is frequented by prostitutes, criminals, gamblers, vagrants or persons violating the law or in which the law is habitually violated.
Any building or structure or any part thereof in which prostitution, lewdness or other unlawful sexual acts are permitted.
Construed wherever appropriate to the context, to include corporations. The singular number as used herein shall include the plural.