1.b> .i> (Ostreidae fam.i>); flat / European / oyster .i> .i> (Ostrea gen.i>); cupped / Pacific / oyster .i> .i> , / (Crassostrea gen.i>)
2.b> ;
3.b> / ;
4.b> - (.i> oyster white);
to be (as)b> close / dumb / as an oysterb> ; ; the world is my oyster, the world's mine oysterb> ; / ; he told American farmers that the world food market could "be our oyster" , .