certificate in WordNet English dictionary

1. a document attesting to the truth of certain stated facts
   certificate  certification  credential  credentials 
   
2. a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends
   "he held several valuable securities"
   security  certificate 
   

1. authorize by certificate
   certificate 
   
2. present someone with a certificate
   certificate