διδάσκαλος
διδάσκαλος
δῐδάσκᾰλος, ὁ, ἡ,
διδάσκω
a teacher, master, Hhymn., Aesch., etc.: εἰς διδασκάλου (sc. οἶκον) φοιτᾶν to go to school, Plat.; διδασκάλων or ἐκ διδασκάλων ἀπαλλαγῆναι to leave school, Plat.; ἐν διδασκάλων at school, Plat.
a dramatic poet was called διδάσκαλος because he taught the actors, Ar.