(organic chemistry) A series of guidelines outlining the relative favorabilities of ring closure reactions in alicyclic compounds.

plural of setting rule

plural of sliding-rule

plural of work to rule

plural of plumb rule

plural of jointing rule

A set of guidelines instructing the police about how to question suspects so that the resulting evidence is admissible in court.

(law) legislation or other binding provisions

(Scotland) An agreed absence of rules in a fight (typically in a public house).

plural of prophylactic rule