This is one! (4)
I believe the answer is:
clue
(Other definitions for clue that I've seen before include "What's this" , "Hint to help the solver" , "Aid to detection" , "Crossword help" , "Lead" .)
I believe the answer is:
clue
(Other definitions for clue that I've seen before include "What's this" , "Hint to help the solver" , "Aid to detection" , "Crossword help" , "Lead" .)