seaweed
//ˈsiːwiːd//
Noun
seaweedSingular
seaweedsPlural
1
Any of various marine algae that grow in the sea or on rocks along the shore, often used as food or fertilizer.
We collected seaweed from the beach to use as fertilizer for the garden.
2
A collective term for large marine plants and algae found in ocean environments.
Various types of seaweed grow along the rocky coastline.