Clue, pointer (4)
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I believe the answer is:
hint
I believe this is a double definition.
'clue' is the first definition.
(synonyms)
'pointer' is the second definition.
(I've seen this in another clue)
(Other definitions for hint that I've seen before include "Imply, suggest" , "Taste" , "A dash" , "Tip - small amount" , "Piece of advice" .)