Rudd \Rudd\, n. [See {Rud}, n.] (Zool.)
A fresh-water European fish of the Carp family ({Leuciscus
erythrophthalmus}). It is about the size and shape of the
roach, but it has the dorsal fin farther back, a stouter
body, and red irises. Called also {redeye}, {roud},
{finscale}, and {shallow}. A blue variety is called
{azurine}, or {blue roach}.
[1913 Webster]