Source : Webster's Revised Unabridged Dictionary (1913)

Mattowacca \Mat`to*wac"ca\, n. [Indian name.] (Zo["o]l.)
   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}.