Steps taken by travellers (7)
I believe the answer is:
flights
'steps taken by travellers' is the definition.
The answer and definition can be both to do with motion as well as being verbs in their -s form.
Perhaps they are linked in a way I don't understand?
'steps taken by travellers' is the wordplay.
'steps' becomes 'flight' (I've seen this before).
'taken by travellers' becomes 's' (I can't justify this - if you can you should give a lot more credence to this answer).
'flight'+'s'='FLIGHTS'
Can you help me to learn more?
(Other definitions for flights that I've seen before include "Escapes" , "Sets of steps" , "Air journeys" .)