尾び扇せんびせんMeanings1nountail fanZoological term for the fan-shaped tail structure of certain aquatic animals, especially crustaceans like shrimp and lobsters.エビの尾び扇せんは、泳およぐときに推すい進しん力りょくを生うみ出だす。The shrimp's tail fan generates propulsion when swimming.
