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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

living thing, animate thing go
a living (or once living) entity

organism, being go
a living thing that has (or can develop) the ability to act or function independently

animal, animate being, beast, brute, creature, fauna go
a living organism characterized by voluntary movement

invertebrate go
any animal lacking a backbone or notochord

arthropod go
invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin

crustacean go
any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton

decapod, decapod crustacean go
crustaceans characteristically having five pairs of locomotor appendages each joined to a segment of the thorax

crawfish, crayfish, crawdad, crawdaddy
small freshwater decapod crustacean that resembles a lobster

noun.animal

2 Subcategories

Old World crayfish, ecrevisse go
small crayfish of Europe and Asia and western North America
American crayfish go
common large crayfishes of eastern North America