seaweed
/ˈsiˌwid/
noun
- Plants that grow in the sea or ocean, especially algae that are often green, brown, or red.
- Seaweed is used in many foods, such as sushi rolls and salads.
- Divers swam through a forest of tall seaweed near the rocky coast.
- The beach was covered with seaweed that had washed ashore overnight.