Egyptian king or teacher (5)
I believe the answer is:
tutor
'teacher' is the definition.
(tutor is a kind of teacher)
'egyptian king or' is the wordplay.
'egyptian king' becomes 'tut' (nickname of Tutankhamun).
'tut'+'or'='TUTOR'
(Other definitions for tutor that I've seen before include "class leader" , "He shows us the way" , "Private educator" , "Teacher (often private)" , "Master" .)