Diaper sent was soiled in walker (10)
I believe the answer is:
pedestrian
'walker' is the definition.
(synonyms)
'diaper sent was soiled' is the wordplay.
'diaper sent' anagrams to 'PEDESTRIAN'.
However, I am not sure how the anagram is indicated.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for pedestrian that I've seen before include "Unexciting" , "Person walking" , "Walker; prosaic" , "Unimaginative" , "nothing much to write home about" .)