Definitions

1. noun

A type of aquatic plant, particularly Eelgrass (Zostera marina), that grows in shallow water and has long, thin stems.

“The local fishermen complained about the thick beds of gutweed in the fishing grounds.”

2. noun

A colloquial or dialectical term for seaweed or marine algae.

“The beachcomber searched for interesting specimens of gutweed on the tide line.”