house rule

Noun

 * 1) A rule adopted by a particular establishment.
 * 2) A rule used in playing a game that is not part of the official ruleset.
 * 1) A rule used in playing a game that is not part of the official ruleset.
 * 1) A rule used in playing a game that is not part of the official ruleset.

Translations

 * Dutch:
 * French:
 * German:
 * Hungarian:
 * Norwegian:
 * Bokmål: husordensregel
 * Nynorsk: husordensregel
 * Swedish: ordningsregel, husregel