noun, plural -tles, (especially collectively
) -tle, verb, -tled, -tling.| 1. | any reptile of the order Testudines, comprising aquatic and terrestrial species having the trunk enclosed in a shell consisting of a dorsal carapace and a ventral plastron. |
| 2. | (not used technically) an aquatic turtle as distinguished from a terrestrial one. Compare tortoise (def. 1). |
| 3. | to catch turtles, esp. as a business. |
| 4. | turn turtle,
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