Person with pedestrian ideas (5)
I believe the answer is:
hiker
'person' is the definition.
(hiker is a kind of person)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for hiker that I've seen before include "One putting up charges" , "Long-distance walker" , "Someone who goes on an extended walk for pleasure" , "One on a walking tour" , "I could be on the trail" .)