green turtle

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A large marine turtle (Chelonia mydas) having greenish flesh that is prized as food, especially in turtle soup.

Wiktionary

1. n. The green sea turtle.

GNU Webster's 1913

1. adj. (Zoöl.) an edible marine turtle. See Turtle.
2. n. (Zoöl.) a marine turtle of the genus Chelonia, having usually a smooth greenish or olive-colored shell. It is highly valued for the delicacy of its flesh, which is used especially for turtle soup. Two distinct species or varieties are known; one of which (Chelonia Midas) inhabits the warm part of the Atlantic Ocean, and sometimes weighs eight hundred pounds or more; the other (Chelonia virgata) inhabits the Pacific Ocean. Both species are similar in habits and feed principally on seaweed and other marine plants, especially the turtle grass.

WordNet 3.0

1. n. large tropical turtle with greenish flesh used for turtle soup