adjective
Definition: Relating to a family of fish that includes herring and sardines.
Example: The clupeid fish are known for their schooling behavior in the ocean.
noun
Definition: A type of fish that belongs to the family Clupeidae, which includes species like herring, sardines, and menhaden, known for their soft fins and schooling behavior.
Example: The fisherman caught a large clupeid while fishing in the ocean.