Give tuition to retinue (5)
I believe the answer is:
train
I believe this clue is a double definition.
'give tuition to' is the first definition.
'retinue' is the second definition.
(both can mean people following an important person)
(Other definitions for train that I've seen before include "School, educate" , "Number of eg carriages in a line" , "Form of transport" , "Engine and carriages" , "Do exercises" .)