oyster
nounfeminine/ˈɔʃtɾɐ/medium
os·tra
Definition
Edible marine bivalve mollusc, with a rough and irregular shell.
Oysters are often served raw with lemon.
The Portuguese oyster is highly prized.
Common collocations
Portuguese oysterPacific oysterraw oystergrilled oyster
Etymology
Do latim 'ostrea', do grego 'ostreon'.