Definition of custos brevium in US English:

custos brevium

noun

rare, historical
  • In England: (the title of) an officer in the Courts of Common Pleas and King's (or Queen's) Bench, having custody of writs and warrants; = "Keeper of the Writs".

Origin

Late 16th century. From post-classical Latin custos brevium from classical Latin custōs + brevium, genitive plural of breve.

Pronunciation

custos brevium

/ˌkʌstɒs ˈbrɛvɪəm/