Targumim, ii., p. 401), Rabboni, Rabbuni (apparently the Galilaean pronunciation of רִבּונִי), a title of honor and reverence by which Jesus is addressed
Distribution of the word across the Bible: Mark (1), John (1)
Mark 10:51 — And Jesus answered and said unto him, What wilt thou that I should do unto thee? The blind man said unto him, Lord (ραββονι), that I might receive my sight.
John 20:16 — Jesus saith unto her, Mary. She turned herself, and saith unto him, Rabboni (ραββουνι); which is to say, Master.