Rabboni
RABBONI (răb-bō'nī). A variant of Rabbi, the Hebrew word for “Teacher.” The title used by Mary Magdalene to Jesus on resurrection morning (John.20.16). See Occupations and Professions: Rabbi.
International Standard Bible Encyclopedia (1915)
rab-o’-ni, rab-o’-ni (rhabboni, "my great master" (Mr 10:51); rhabbouni (Westcott-Hort rhabbounei), (Joh 20:16)).of agoraios (literally, "lounger in the market place"), in Ac 17:5, where it replaces "baser sort" of the King James Version. It has the common meaning of an unruly, lawless set who are ready to join a mob.
See Rabbi.