Pressure beneath same cracked sewer? (10)
I believe the answer is:
seamstress
'sewer?' is the definition.
(thesaurus)
'pressure beneath same cracked' is the wordplay.
'pressure' becomes 'stress' (I've seen this before**).
'beneath' says to put letters next to each other (in a down clue).
'cracked' indicates an anagram.
'same' with letters rearranged gives 'seam'.
'stress' put after 'seam' is 'SEAMSTRESS'.
(Other definitions for seamstress that I've seen before include "sewer" , "Dressmaker" , "Midinette" , "needlewoman" , "Woman who sews for a living" .)