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Gnathostome

Noun: A gnathostome is a vertebrate animal possessing a jaw, which is a bony or cartilaginous structure used for feeding and defense. Gnathostomes include all the jawed vertebrates, such as fish, amphibians, reptiles, birds, and mammals.

Sample Sentence: The evolution of gnathostomes marked a significant milestone in the development of vertebrates.

Adjective: In the context of anatomy, gnathostome refers to something related to a jawed vertebrate.

Sample Sentence: The gnathostome skeleton exhibits distinct characteristics compared to that of jawless vertebrates.

Local: In local usage, gnathostome refers to a particular species of fish found in the local waters.

Sample Sentence: The fishermen were excited to catch a rare gnathostome species in the nearby river.

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