Give tuition to one's retinue (5)
I believe the answer is:
train
This clue could be a double definition.
'give tuition to' is the first definition.
'one's retinue' is the second definition.
'train' can be an answer for 'retinue' (both can mean people following an important person). I am not certain of the 'one's' bit.
Can you help me to learn more?
(Other definitions for train that I've seen before include "Coach - string of coaches" , "instruct and > discipline" , "Public transport on the railway" , "Instruct - exercise" , "Coach - coaches with engine" .)