sea grass


Definition of sea grass

  1. 1a :  a tassel grass (Ruppia maritima) b :  a plant of the genus Salicornia (especially S. europaea) c :  thrift 6 d or sea hay :  eelgrass 1; also :  its dried stems widely used for stuffing furniture and in making coarse fabrics

  2. 2 :  any of several seaweeds; especially :  a green alga (genus Enteromorpha) that often causes fouling of the bottoms of ships

  3. 3 :  a cirrus cloud of wavy hairlike elements

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