V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

BTB
       Branch Target Buffer (CPU)


The Free On-line Dictionary of Computing (30 December 2018):

Branch Target Buffer
BTB

    (BTB) A register used to store the predicted
   destination of a branch in a processor using branch
   prediction?

   [Is this correct?  Examples?]

   (1995-05-05)