Source : Webster's Revised Unabridged Dictionary (1913)

Teste \Tes"te\, n. [So called fr. L. teste, abl. of testis a
   witness, because this was formerly the initial word in the
   clause.] (Law)
   (a) A witness.
   (b) The witnessing or concluding clause, duty attached; --
       said of a writ, deed, or the like. --Burrill.