Edges of travelator enough to walk over (7)
I believe the answer is:
trample
'walk over' is the definition.
'trample' can be an answer for 'walk' (trampling is a kind of walking). I'm not sure about the 'over' bit.
'edges of travelator enough' is the wordplay.
'edges of' means to remove the middle letters.
'enough' becomes 'ample' (ample means enough or plenty).
'travelator' with its middle taken out is 'tr'.
'tr'+'ample'='TRAMPLE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for trample that I've seen before include "squash" , "Tread on something roughly" , "Heedlessly tread down" , "Step on" , "Insult" .)