Definition of turtle grass in English:

turtle grass

Pronunciation /ˈtərdl ɡras/ /ˈtərdl ɡræs/

noun

  • A submerged marine flowering plant found in the Caribbean, with long grasslike leaves.

    Thalassia testudinum, family Hydrocharitaceae

    ‘Turtle grass was reported at depths deeper than 30 feet in clear waters of the Bahamas and only to 6 feet in murky conditions.’
    • ‘The fish had driven down deep in the turtle grass and sea weeds trying to hide.’