Meaning of hackleback in English:

hackleback

Pronunciation /ˈhaklbak/

noun

US
  • 1 dialect, rare A North American freshwater mussel, Lasmigona complanata, with rough ridges on the shell.

  • 2 dialect The shovelnose sturgeon, Scaphirhynchus platorynchus, a small freshwater sturgeon of the Missouri and Mississippi river systems. Often attributive, especially with reference to the use of its black roe as caviar.

Origin

Late 19th century. From hackle + back.