Come Down Meaning

(Britain) To graduate from university especially an Oxbridge university

Example: To descend, fall.
1611, Bible (KJV), Genesis 45:9:
  Haste ye, and go up to my father, and say unto him, Thus saith thy son Joseph, God hath made me lord of all Egypt: come down unto me, tarry not.
1898, Winston Churchill, chapter 4, The Celebrity:
  No matter how early I came down, I would find him on the veranda, smoking cigarettes, or otherwise his man would be there with a message to say that his master would shortly join me if I would kindly wait.
1995, Ash, Goldfinger
  I'm feeling so alive, feeling so real / On a stormy night, the rain is coming down / Rain like never before / I've got some records on, some bottles of wine / On a stormy night, the rain is lashing down / And I'm waiting for her.
To decrease
  Real estate prices have come down since the peak of the boom.‎
To reach a decision
  I can't guess which way the board will come down on the project.‎
To be passed through time.
  Much wisdom has come down in the form of proverbs.‎
  He finally came down from his post-bonus high.‎