rumour mill

mill (English)

(intransitive) To undergo hulling.. (intransitive, followed by, _, around, about, etc.) To move about in an aimless fashion.. (intransitive, slang) To take part in a fistfight; to box.. (obsolete, UK, thieves' cant) To commit burglary.. (trading card games) To place cards into the discard pile directly from the draw pile.. (transitive) To cause to mill, or circle around.. (transitive) To [...]

rumor mill (English)

(idiomatic) A process in which a group or network of persons originate or promulgate gossip and other unsubstantiated claims.