crustacean
noun
any chiefly aquatic arthropod of the class Crustacea, typically having the body covered with a hard shell or crust, including the lobsters, shrimps, crabs, barnacles, and wood lice.
crustaceans
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pluralof crustacean.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Some specimens preserve flap-like structures on the abdomen resembling features seen in modern crustaceans such as lobsters, raising the possibility that the giant scorpion could move between water and land.
From Science Daily ● Sep. 2, 2026
Jellyfish, worms and crustaceans are among the community of creatures living off the huge spread of carcasses.
From BBC ● Jun. 10, 2026
Instead, it has proven to be about Appalachian springsnails—and a few other rare or endangered species, including freshwater mussels, fish, and crustaceans.
From Slate ● Apr. 27, 2026
The job Jonas has is about as far away from the crustaceans as Earth is from Mars.
From The Wall Street Journal ● Jan. 23, 2026
Sookie stopped and lifted the lid, presenting a pile of crustaceans, writhing like leggy bugs.
From "The Line Tender" by Kate Allen
