1. any of various marine plants and algae that grow in the ocean

Examples

• The beach was covered with dried seaweed after the storm.
• Many types of seaweed are edible and used in Asian cuisine.
• The diver swam through a forest of tall seaweed.
• Seaweed is harvested commercially for food and industrial uses.
• Green seaweed clung to the rocks at low tide.
• The sushi was wrapped in a sheet of dried seaweed.