One of the mysteries of the English language finally explained.
1United States regional. A North American freshwater mussel, Lasmigona complanata, with rough ridges on the shell. Now rare.
2Chiefly US (originally regional). 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.
Late 19th century. From hackle + back.
In this article we explore how to impress employers with a spot-on CV.