Teacher from the east greeting wise person there (5)
I believe the answer is:
rishi
'wise person there' is the definition.
I can't judge whether this defines the answer.
'teacher from the east greeting' is the wordplay.
'teacher' becomes 'sir' (a male teacher might be addressed as 'sir').
'from the east' says the letters should be written backwards (on a map from right to left).
'greeting' becomes 'hi' (hi is a kind of greeting).
'sir' written backwards gives 'ris'.
'ris'+'hi'='RISHI'
Can you help me to learn more?
(Other definitions for rishi that I've seen before include "Revered man" , "wise man" , "holy man" , "Hindu sage or saint" , "Guru" .)