seashell
🇺🇸
/ˈsiːʃel/
🇬🇧
/ˈsiːʃel/
A hard, protective outer layer that some sea creatures have, which can be found on the beach after the creature has died.
The child picked up a beautiful seashell from the beach and added it to her collection.
孩子从海滩上捡起一个美丽的贝壳,把它加到了她的收藏中。