A teacher's means of transport (5)
I believe the answer is:
coach
This could be a double definition.
'a teacher's' is the first definition.
(coach is a kind of teacher)
'of transport' is the second definition.
'coach' can be an answer for 'transport' (coach is a kind of transport). I'm unsure of the 'of' bit.
'means' is the link.
Can you help me to learn more?
(Other definitions for coach that I've seen before include "Single-decker bus" , "Train the bus" , "Trainer as of soccer team" , "Vehicle; instructor" , "actor takes instruction from me?" .)