Main entry: Calidris canutus, knot, grayback, greyback
Definition: a sandpiper that breeds in the Arctic and winters in the southern hemisphere
Main entry: Limnodromus griseus, grayback, greyback
Definition: a dowitcher with a grey back
Main entry: greyback, Johnny, Johnny Reb, Reb, Rebel
Definition: `Johnny' was applied as a nickname for Confederate soldiers by the Federal soldiers in the American Civil War; `greyback' derived from their grey Confederate uniforms