Practicing travelling by rail? (8)
I believe the answer is:
training
This clue could be a double definition.
'practicing' is the first definition.
The definition and answer can be both related to thinking as well as being present participle verbs.
Maybe there's an association between them I don't understand?
'travelling by rail?' is the second definition.
The definition and answer can be both to do with motion as well as being present participle verbs.
Perhaps you can see a link between them that I don't see?
Can you help me to learn more?
(Other definitions for training that I've seen before include "Tuition" , "Preparing for athletic performance" , "Coaching" , "Doing exercise" , "Process of instruction" .)