ostra

noun
  1. Ostra is a genus of marine bivalve mollusks in the family Ostreidae, commonly referred to as oysters. noun
    The Ostra species are known for their irregular shell shapes.
    Marine biologists are studying the habitat of the Ostra to understand their ecological impact.
  2. Ostra is a town and comune in the Marche region of Italy, known for its historical architecture and cultural heritage. noun
    During our trip to Italy, we visited Ostra and admired its medieval buildings.
    Ostra is famous for its annual festival celebrating local traditions and cuisine.