Strong's G1320 — διδάσκαλος (noun)
didaskalos (did-as'-kal-os) n.
1. a teacher, an instructor
2. (figuratively, with reverence) master
{genitive case or specially}
[from G1321]
KJV: doctor, master, teacher 
Root(s): G1321 
Compare: G3101 
Hebrew root: διδάσκω
Occurrences: 59