8 letters · 9 points in Scrabble
noun any of various seaweeds that grow underwater in shallow beds
originEtymology tree English sea Proto-Indo-European *gʰreh₁-der. Proto-Germanic *grasą Proto-West Germanic *gras Old English græs Middle English gras English grass English seagrass From sea + grass.
Etymology from Wiktionary, CC BY-SA 3.0