Real Dictionary

gefilte fish in American English
chopped fish mixed with chopped onion, egg, seasoning, etc. and boiled, orig. in a casing of the fish skin: it is usually served cold in the form of balls or cakes
noun: a forcemeat of boned fish, esp. such freshwater fish as carp, pike, or whitefish, blended with eggs, matzo meal, and seasoning, shaped into balls or sticks and simmered in a vegetable broth, and often served chilled

gefilte fish in British English
dish of fish stuffed with various ingredients
noun: a dish consisting of fish and matzo meal rolled into balls and poached, formerly served stuffed into the skin of a fish