Potential pile boss may make (8)
I believe the answer is:
possible
'potential' is the definition.
(I know that potential can be written as possible)
'pile boss may make' is the wordplay.
'may make' indicates an anagram (I've seen this in other clues).
'pile'+'boss'='pileboss'
'pileboss' anagrammed gives 'POSSIBLE'.
(Other definitions for possible that I've seen before include "Capable of being achieved" , "Capable of happening" , "Conceivable, imaginable" , "Feasible achievable" , "Achievable, able to be done" .)