adjective
Definition: Relating to a group of large mammals that have long trunks, such as elephants.
Example: The proboscidian species are known for their unique trunk and large size.
noun
Definition: A type of large mammal that includes elephants and their extinct relatives, known for having a long trunk and large tusks.
Example: The proboscidian is known for its distinctive trunk and tusks, which are used for various tasks.