Refer to indirectly (6)
I believe the answer is:
allude
'refer to indirectly' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for allude that I've seen before include "'Hint, suggest (6)'" , "Refer to, speak of" , "Refe" , "Speak about in passing" , "give a reference" .)