In Greek mythology, Eunostus[pronunciation?] (Ancient Greek: Εὔνοστος, romanized:Eúnostos) was a goddess whose image was set up in mills, and who was believed to keep watch over the just weight of flour.

Promylaia (Ancient Greek: Προπύλαια, romanized:Promylaia, lit.'the one that stands before/protects the mill') was another name for a goddess of the mills, who was worshipped in the same fashion as Eunostus.

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