mattowacca

from The Century Dictionary.

• noun Same as gizzard-shad.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) An American clupeoid fish (Clupea mediocris), similar to the shad in habits and appearance, but smaller and less esteemed for food; -- called also hickory shad, tailor shad, fall herring, and shad herring.