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
-
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.
On the small vessel’s deck, a pair of traps containing skittering crustaceans had just been heaved aboard from 25 feet below the water.
From The Wall Street Journal ● Jul. 15, 2026
However, that earlier work relied largely on physiological data collected from modern marine species, particularly economically important fish and crustaceans, leaving major gaps in knowledge about the animals that were actually hardest hit.
From Science Daily ● Jul. 12, 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
Murtlaps eat crustaceans and the feet of anyone foolish enough to step on them.
From "Fantastic Beasts and Where to Find Them" by J.K. Rowling
