(law) A test of criminal insanity by which "it must be clearly proved that, at the time of committing the act, the party accused was labouring under such a defect of reason, from disease of the mind, as not to know the nature and quality of the act he was doing, or, if he did know it, that he did not know he was doing what was wrong".

The laws that govern driving, especially of motorists and cyclists. / (figuratively) A set of standard procedures or regulations governing the way something is done.

plural of slayer rule

A code of rules governing professional and amateur boxing, published in 1867 and endorsed by the ninth Marquess of Queensberry.

plural of house rule

plural of exclusionary rule

plural of rules lawyer

Third-person singular simple present indicative form of rules lawyer

plural of golden rule

(informal) Australian rules football.