Drive from tee in open country (5)
I believe the answer is:
motor
'drive' is the definition.
(synonyms)
'tee in open country' is the wordplay.
'tee' becomes 't'.
'in' means one lot of letters goes inside another.
'open country' becomes 'moor' (I can't justify this - if you can you should give a lot more credence to this answer).
't' placed inside 'moor' is 'MOTOR'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for motor that I've seen before include "Engine of vehicle" , "Internal combustion engine" , "Drive" , "Wheels" , "Car - car's engine" .)