1. an arthropod animal with a hard shell, jointed legs, and typically living in water, such as crabs, lobsters, and shrimp

1. relating to or characteristic of crustaceans
Usage: technical

Examples

• The lobster is a popular crustacean served in seafood restaurants.
• Marine biologists study various crustacean species in coral reefs.
• Crabs are crustaceans that can live both in water and on land.
• The aquarium has a special exhibit featuring colorful crustacean specimens.
• Shrimp farming has made this crustacean widely available year-round.
• The crustacean shell provides protection from predators.
• Many crustacean species molt their shells as they grow.