Definition of "greyback" [greyback]

• A Confederate soldier during the US Civil War (because of the grey uniforms). (noun)
• A louse. (noun)
• A local name for various grey birds. (noun)

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• "The rasp of his own "greyback" shirt and the squeak of his boots seemed to bring him to himself."
• "Originally from South America, cane toads were imported to Australia in 1935 in an attempt to rid the country of the greyback beetle, which was destroying the sugarcane crop."
• "Threading her way through the crowded streets, heeding not the jeers or insults of the rebel soldiery, she soon came in front of the Cooper Mansion, to find a rebel flag floating from an upper window, and a well dressed soldierly looking greyback, with bayonet fixed, pacing his beat in front."