dial. or colloq. [Fanciful alteration of SPARROW.] A sparrow. Also attrib.

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1862.  C. C. Robinson, Dial. Leeds, 417. ‘Spadger-pie’ is an article of diet occasionally.

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1892.  [D. Jordan] (‘Son of Marshes’), Within Hour of Lond., 59. The sparrow, or ‘spadger,’ is a friend to the farmer.

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