dial. and U.S. Also zog. [Of obscure origin.] A drowsy or lethargic state; a sleep, doze, stupor.

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1874.  Miss S. P. Fox, Kingsbridge (ed. 2), 268. A bit of a zog.

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1880.  W. Cornwall Gloss., 53/1. She is in a sweet sog.

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1887.  Sarah Orne Jewett, in Scribner’s Mag., II. 738. Old Ezra Barnet … waved a limp hand warningly toward the bedroom-door.
  ‘She’s layin’ in a sog,’ he said, hopelessly.

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