any of various marine and aquatic animals that are dark gray above and light-colored or white below, as the gray whale, the alewife, certain whitefish, and certain sandpipers.
Informal. a Confederate soldier.

Origin of grayback

First recorded in 1805–15; gray1 + back1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for grayback

Historical Examples of grayback

  • Not a suspicion had yet been excited among my grayback companions.

  • The grayback had evidently found the clothes, and suspected the purpose for which they were concealed.

  • And the "grayback" (as the boys termed the rebels) could hear the ominous click of the gun lock in Frank's hands.

    The Drummer Boy

    John Trowbridge

  • An old stove without a pipe is going and some stinking stuff is burning that nothing short of a grayback can stand.

    Diary of an Enlisted Man

    Lawrence Van Alstyne

  • "There's life there, Grayback," growled my attendant; and the Rebel ordered us to the rear.