n. 西鲱

Shad \Shad\ (sh[a^]d), n. sing. & pl. [AS. sceadda a kind of
fish, akin to Prov. G. schade; cf. Ir. & Gael. sgadan a
herring, W. ysgadan herrings; all perhaps akin to E. skate a
fish.] (Zo["o]l.)
Any one of several species of food fishes of the Herring
family. The American species ({Alosa sapidissima} formerly
{Clupea sapidissima}), which is abundant on the Atlantic
coast and ascends the larger rivers in spring to spawn, is an
important market fish. The European allice shad, or alose
({Alosa alosa} formerly {Clupea alosa}), and the twaite shad
({Alosa finta} formerly {Clupea finta}), are less important
species. [Written also {chad}.]

Note: The name is loosely applied, also, to several other
fishes, as the gizzard shad (see under {Gizzard}),
called also {mud shad}, {white-eyed shad}, and {winter
shad}.

{Hardboaded shad}, or {Yellow-tailed shad}, the menhaden.

{Hickory shad}, or {Tailor shad}, the {mattowacca}.

{Long-boned shad}, one of several species of important food
fishes of the Bermudas and the West Indies, of the genus
{Gerres}.

{Shad bush} (Bot.), a name given to the North American shrubs
or small trees of the rosaceous genus {Amelanchier} ({A.
Canadensis}, and {A. alnifolia}) Their white racemose
blossoms open in April or May, when the shad appear, and
the edible berries (pomes) ripen in June or July, whence
they are called Juneberries. The plant is also called
{service tree}, and {Juneberry}.

{Shad frog}, an American spotted frog ({Rana halecina}); --
so called because it usually appears at the time when the
shad begin to run in the rivers.

{Trout shad}, the squeteague.

{White shad}, the common shad.