testamur

from The Collaborative International Dictionary of English v.0.48

Testamur \Tes*ta"mur\, n. [L., we testify, fr. testari to
   testify.] (Eng. Universities)
   A certificate of merit or proficiency; -- so called from the
   Latin words, Ita testamur, with which it commences.
   [1913 Webster]