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oyster
noun
- any of various bivalve mollusks with an irregularly shaped, unequal shell, living attached to rocks, other shells, etc., and widely used as food
- the soft, edible part of such a mollusk
- the oyster-shaped bit of meat contained in a depression on each side of the pelvic bone of a fowl
- something from which profit or advantage can be extracted: the world is my oyster
- Informal a taciturn person
intransitive verb
to gather, raise, or dredge oysters
See oyster in American Heritage Dictionary 4
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