seed oyster
noun
1.
a very young oyster, especially one used in the cultivating and transplanting of an oyster bed.
Origin
1880-85
Examples from the web for
seed oyster
The fashionable oyster needs a year to grow from the
seed oyster
to its proper size.
British Dictionary definitions for
seed oyster
seed oyster
noun
1.
a young oyster, esp a cultivated oyster, ready for transplantation