marine mollusks having a rough irregular shell; found on the sea bed mostly in coastal waters
"The diver carefully collected fresh oysters from the rocky bottom of the shallow coastal waters."
a small muscle on each side of the back of a fowl
"The butcher trimmed off the oyster, which is the small muscle located at the base of the chicken's breastbone."
Any of certain marine bivalve mollusks, especially those of the family Ostreidae (the true oysters), usually found adhering to rocks or other fixed objects in shallow water along the seacoasts, or in brackish water in the mouth of rivers.
"The diver carefully removed a large blue mussel from an old oyster shell that was firmly cemented to the rocky shore."
In plain English: An oyster is a small, hard-shelled sea creature that lives on the ocean floor and eats tiny particles from the water.
"The chef served us fresh oysters on ice with lemon wedges."
Usage: The plural form is "oysters," not "oysters." When referring to the color, use only in specific descriptive contexts where the unique shell-like hue is relevant.
gather oysters, dig oysters
"The local fishermen spend their mornings diving into the bay to gather fresh oysters from the muddy bottom."
To fish for oysters.
"The boatman spent his morning dredging the shallow bay to harvest fresh oysters."
Of a pale beige colour tinted with grey or pink, like that of an oyster.
"The old man's skin had taken on an oyster hue from years spent working on the docks without protection."
"The oyster shell was cracked open by the waves, revealing its soft interior."
A surname.
"The mayor, whose family name is Oyster, gave a speech at the town hall."
The word "oyster" comes from the Middle English oystre, which was borrowed from both Old English and Anglo-Norman forms derived ultimately from Latin. Its journey traces back to Ancient Greek, where it originally referred specifically to a type of shellfish before entering modern English usage.