Crustacean

/krʌˈsteɪʃən/

Synonyms

Slang Meanings

A colloquial term for someone who eats a lot of seafood.
He's such a crustacean; he could eat shrimp every day!
Referring to someone who is hard-shelled or tough in personality.
She can be a real crustacean when it comes to dealing with criticism.