blue·​back | \ ˈblü-ˌbak \

Definition of blueback

1 : any of various fishes (such as lake herring or glut herring) having a blue or bluish color on the back especially : blueback herring
2 [so called from the contrast of the blue ink used on its back to the green ink used on the back of the Northern greenback] archaic : a paper note of Confederate money
3 : a bluish discoloration of the backs of turkeys resulting from dissemination of feather pigment through the skin when immature feathers are broken
4 [so called from the color of the coat] : a young hooded seal

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First Known Use of blueback

1812, in the meaning defined at sense 1

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The first known use of blueback was in 1812

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Cite this Entry

“Blueback.” Dictionary, Merriam-Webster, Accessed 27 Sep. 2020.

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