Noun eelgrass has 2 senses
- eelgrass, grass wrack, sea wrack, Zostera marina - submerged marine plant with very long narrow leaves found in abundance along North Atlantic coasts
--1 is a kind of aquatic plant, water plant, hydrophyte, hydrophytic plant
--1 is a member of Zostera, genus Zostera
- tape grass, eelgrass, wild celery, Vallisneria spiralis - submerged aquatic plant with ribbonlike leaves; Old World and Australia
--2 is a kind of aquatic plant, water plant, hydrophyte, hydrophytic plant
--2 is a member of Vallisneria, genus Vallisneria
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