Definify.com
Webster 1913 Edition
Whitebait
White′baitˊ
,Noun.
 (Zool.) 
(a) 
The young of several species of herrings, especially of the common herring, esteemed a great delicacy by epicures in England. 
(b) 
A small translucent fish (
Salanx Chinensis
) abundant at certain seasons on the coasts of China and Japan, and used in the same manner as the European whitebait.