- any of various aquatic chelonian reptiles, esp those of the marine family Chelonidae, having a flattened shell enclosing the body and flipper-like limbs adapted for swimming
- turn turtle ⇒ to capsize
WordReference Random House Learner's Dictionary of American English © 2014
- any of various water- and land-dwelling reptiles having the trunk enclosed in a shell.
- turn turtle, to capsize or turn over completely.
- an archaic name for turtledove