triverbial Meaning, Definition & Usage

Tri*ver"bi*al adjective
Etymology
Pref. tri- + L. verbum a word.
Definitions
  1. (Rom. Antiq.) Pertaining to, or designating, certain days allowed to the pretor for hearing causes, when be might speak the three characteristic words of his office, do, dico, addico. They were called dies fasti.

Webster 1913