Grist for the rumor mill (7)

I believe the answer is:

hearsay

(Other definitions for hearsay that I've seen before include "Common talk" , "Based on report given by others" , "Kind of rumour, makes bad evidence" , "Gossip or idle talk - it's not evidence" , "rumoured" .)

I've seen this clue in The New York Times and the USA Today.

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