dial. Also byng. intr. Of milk: To begin to turn sour, to be on the turn.

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1867.  Harland, Lanc. Folk-lore, 165, in Lanc. Gloss. (E. D. S.). The milk is bynged or will not churn, though a hot poker has been used to spoil the witchery. [cf. BLINK.]

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