A difficult one to crack? (7)
I believe the answer is:
toughie
(Other definitions for toughie that I've seen before include "It may prove impossible" , "Yob" , "poser" , "A difficult test" , "Difficult problem" .)
I believe the answer is:
toughie
(Other definitions for toughie that I've seen before include "It may prove impossible" , "Yob" , "poser" , "A difficult test" , "Difficult problem" .)