Thick slice of bread trodden on as you come in? (8)
I believe the answer is:
doorstep
'thick slice of bread' is the definition.
(term for a large or thick slice of bread)
'trodden on as you come in?' is the wordplay.
I cannot quite understand how this works, but
'come' could be 'do' (synonyms) and 'do' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for doorstep that I've seen before include "chunk of bread" , "Large slice of bread?" , "big piece of bread" , "Torpedos (anag.)" , "Sill at threshold" .)